S1E20 · Assassin at Peking graph

Tegana’s accusations and the Doctor’s failed gamble

The Doctor’s reckless backgammon wager with Kublai Khan—intended to reclaim the TARDIS—collapses when he loses, leaving Susan devastated and the group’s hopes of escape shattered. Meanwhile, Ling-Tau delivers Tegana’s fabricated accusations against Ian and Ping-Cho for theft, deepening the group’s entrapment. Barbara’s optimism about the TARDIS wager evaporates as the Doctor’s failure exposes his impulsiveness, while Tegana’s false charges isolate Ian and Ping-Cho, tightening his grip on the narrative. The scene escalates tension by revealing the Doctor’s moral dilemma—his gamble has not only failed but also tightened the Khan’s control over the group, raising the stakes for their escape and Tegana’s exposure. The emotional weight lies in Susan’s disillusionment and the group’s growing desperation as Tegana’s manipulations unfold.

Plot Beats

The narrative micro-steps within this event

2

Marco Polo informs Barbara and Susan that the Doctor is wagering the TARDIS in a backgammon game with Kublai Khan, creating a situation where they could either win their freedom or lose everything.

Concern to Hope

Ling-Tau arrives and reports that Ian and Ping-Cho are being held under guard, accused by Tegana of stealing the Khan's property, intensifying the group's worries.

Hope to Anxiety

Who Was There

Characters present in this moment

9

Hopeful turning to alarm and indignation, as she grapples with the realization that the group’s situation has worsened.

Barbara reacts with a mix of hope and alarm as the scene unfolds. Initially optimistic about the Doctor’s wager potentially securing their freedom, she quickly shifts to indignation upon hearing the accusations against Ian and Ping-Cho. Her emotional range reflects her deep concern for the group’s well-being and her frustration at the injustice of Tegana’s schemes. She questions the accusations and reacts emotionally to the news of Ian and Ping-Cho’s arrest, underscoring the group’s growing desperation.

Goals in this moment
  • To expose Tegana’s lies and clear Ian and Ping-Cho’s names, restoring the group’s unity and credibility.
  • To find a way to escape the Khan’s court before the wedding and banquet proceed, ensuring their survival.
Active beliefs
  • That the group’s survival depends on their ability to work together and outsmart their enemies.
  • That Tegana’s accusations are a deliberate attempt to divide and conquer, and must be challenged.
Character traits
Hopeful (initially) Indignant Protective Quick to react emotionally
Follow Barbara Wright's journey

Triumphant and unyielding (implied), relishing his victory over the Doctor and the control it affords him over the group.

Kublai Khan is mentioned indirectly as the recipient of the TARDIS in the backgammon wager and as the figure whose property Ian and Ping-Cho are accused of stealing. His authority looms over the scene, symbolizing the absolute power of the court and the group’s powerlessness. The Doctor’s loss to him is a crushing blow, reinforcing the Khan’s dominance and the group’s entrapment in his world.

Goals in this moment
  • To maintain his absolute authority over the court and its inhabitants, including the Doctor’s group.
  • To use the TARDIS as a symbol of his power and a tool to further his legacy.
Active beliefs
  • That the Doctor’s defeat is a sign of his own superiority and the rightness of his rule.
  • That the group’s entrapment is necessary to preserve the stability of his empire.
Character traits
Authoritative Unyielding Symbol of imperial power
Follow Kublai Khan's journey

Serious and dutiful, showing no personal investment in the accusations but fully committed to his role as the Khan’s representative.

Ling-Tau delivers the devastating news of Ian and Ping-Cho’s arrest with dutiful seriousness, serving as the Khan’s courier and enforcer of his will. His demeanor is formal and unemotional, reflecting his role as a neutral messenger of the court’s decisions. He interacts politely with Marco Polo but reveals no personal bias, adhering strictly to his duty to convey the accusations without question.

Goals in this moment
  • To fulfill his duty as a courier by delivering the Khan’s message accurately and without delay.
  • To maintain the appearance of impartiality, ensuring the group does not perceive him as an ally or obstacle.
Active beliefs
  • That the Khan’s word is absolute and must be enforced without question.
  • That his role is to facilitate the court’s decisions, not to judge their merits.
Character traits
Dutiful Neutral Disciplined Unemotional in delivery
Follow Ling-Tau's journey
Marco Polo
primary

Frustrated and concerned, feeling the weight of his own powerlessness in the face of Tegana’s manipulations and the Khan’s authority.

Marco Polo is frustrated and concerned as he informs the group about the Doctor’s backgammon wager and the dire consequences of his loss. He expresses resignation about losing control of the TARDIS and reveals Ping-Cho’s impending marriage, adding to the group’s sense of helplessness. His demeanor is one of weary acceptance, reflecting his own entanglement in the court’s politics and his inability to protect his companions.

Goals in this moment
  • To find a way to regain control of the TARDIS and secure his own passage home, despite the odds.
  • To support the group in their efforts to expose Tegana’s lies and protect Ping-Cho from her forced marriage.
Active beliefs
  • That the Khan’s court is a treacherous place where loyalty is fleeting and power is everything.
  • That the group’s only hope lies in unity and quick thinking, even in the face of overwhelming odds.
Character traits
Frustrated Concerned Resigned Weary
Follow Marco Polo's journey

Hopeful turning to disillusionment and heartbreak, as she grapples with the loss of the TARDIS and the group’s growing desperation.

Susan is initially hopeful that the Doctor will win the backgammon wager, but her emotions quickly shift to disillusionment upon learning of his loss. She expresses deep concern for Ping-Cho’s situation, highlighting her empathy and loyalty to her newfound friend. Her reaction to the Doctor’s failure is one of heartbreak, as she realizes the group’s hopes of escape have been dashed. Her emotional state is raw and vulnerable, reflecting her deep attachment to the group and her fear for their future.

Goals in this moment
  • To support Ping-Cho and find a way to protect her from the forced marriage and Tegana’s schemes.
  • To help the group regain their strength and find a new path to escape, even in the face of overwhelming odds.
Active beliefs
  • That the group’s unity is their greatest strength, and they must stick together to survive.
  • That the Doctor’s failure is a temporary setback, and they must find another way to reclaim the TARDIS.
Character traits
Hopeful (initially) Empathetic Disillusioned Loyal
Follow Susan Foreman's journey

Cunningly triumphant (off-screen), relishing the group’s growing desperation and the Doctor’s failure.

Tegana is not physically present in this scene but looms as the unseen architect of the group’s downfall. His fabricated accusations against Ian and Ping-Cho—delivered by Ling-Tau—are revealed as a calculated move to isolate and discredit the Doctor’s companions, tightening Tegana’s control over the narrative. His manipulations are implied to be part of a broader strategy to undermine the group’s credibility and secure the TARDIS for Noghai’s invasion plans.

Goals in this moment
  • To discredit Ian and Ping-Cho through false accusations, ensuring their imprisonment and weakening the group’s cohesion.
  • To secure the TARDIS for Noghai’s invasion by eliminating the Doctor’s ability to reclaim it, leveraging the Khan’s distrust.
Active beliefs
  • That the Doctor’s companions are a threat to his plans and must be neutralized.
  • That the Khan’s court is ripe for exploitation through deception and false loyalty.
Character traits
Manipulative Strategic Ruthless Indirectly controlling
Follow Tegana's journey

Resigned and possibly embarrassed, masking deeper guilt and frustration over his failure to reclaim the TARDIS and protect his companions.

The Doctor enters the scene with a heavy heart, revealing his loss in the backgammon wager to the group. He shows them a consolation prize—a worthless piece of paper currency—symbolizing the emptiness of his defeat. His demeanor is resigned, and his usual cunning is replaced by a rare moment of vulnerability. The loss of the TARDIS is a personal failure, and he grapples with the emotional weight of having let his companions down.

Goals in this moment
  • To accept the consequences of his gamble and find a new way to reclaim the TARDIS without further endangering the group.
  • To reassure his companions that he will not give up, despite the setback.
Active beliefs
  • That his impulsive wager was a miscalculation, and he must now rely on strategy rather than luck.
  • That the group’s survival depends on his ability to outmaneuver Tegana and the Khan, even in the face of defeat.
Character traits
Resigned Vulnerable Self-reflective Emotionally raw
Follow The First …'s journey
Supporting 2

Frustrated and determined (implied), likely seething at the injustice of the false accusation while plotting a way to prove his innocence.

Ian is mentioned as being held under guard and accused of theft, though he is not physically present in this scene. His absence underscores the group’s fragmentation and the urgency of their situation. The accusation against him—fabricated by Tegana—serves as a direct attack on the group’s unity and credibility, forcing the others to confront the reality of their entrapment.

Goals in this moment
  • To clear his name and Ping-Cho’s, exposing Tegana’s lies to the Khan.
  • To reunite with the group and regain their collective strength to escape.
Active beliefs
  • That Tegana’s accusations are part of a larger conspiracy to control the TARDIS and the Khan’s court.
  • That the group’s survival depends on exposing the truth before the wedding and banquet proceed.
Character traits
Loyal Resilient under pressure A target of Tegana’s schemes
Follow Ian Chesterton's journey
Ping-Cho
Lady
secondary

Desperate and resigned (implied), likely feeling trapped between Tegana’s manipulations and the impending marriage she cannot escape.

Ping-Cho is mentioned as being held under guard and accused of theft, though she is not physically present. Her situation is discussed with sympathy by Susan and Barbara, highlighting her vulnerability as a woman caught in the crossfire of Tegana’s schemes. Her impending forced marriage adds another layer of desperation to the group’s plight, emphasizing the stakes of their entrapment.

Goals in this moment
  • To survive the accusations and avoid the forced marriage, seeking any ally who can help her.
  • To reunite with the group and find a way to expose Tegana’s lies before it’s too late.
Active beliefs
  • That the group’s support is her only hope of escaping her fate.
  • That Tegana’s accusations are a deliberate attempt to silence her and control her future.
Character traits
Vulnerable Sympathetic figure Resilient in adversity
Follow Ping-Cho's journey

Objects Involved

Significant items in this scene

1
Kublai Khan's Ornate Backgammon Set

The piece of paper currency given to the Doctor as a consolation prize is a bitter reminder of his failure. It symbolizes the emptiness of his victory and the Khan’s mocking generosity. The currency is worthless in the context of the group’s survival, serving only to highlight the Doctor’s humiliation and the group’s growing desperation. Its presence underscores the stark contrast between the Doctor’s hopes and the harsh reality of their situation.

Before: Part of Kublai Khan’s wealth, held in reserve …
After: In the Doctor’s possession, a tangible symbol of …
Before: Part of Kublai Khan’s wealth, held in reserve as a potential prize or consolation for losers of his games.
After: In the Doctor’s possession, a tangible symbol of his defeat and the group’s entrapment.

Location Details

Places and their significance in this event

1
Peking Palace Cloister and Corridors

The Peking Palace Cloister serves as a neutral yet oppressive meeting ground where the group’s hopes are shattered. Its stone arches and shadowed walkways create an atmosphere of isolation and desperation, amplifying the emotional weight of the Doctor’s failure and the accusations against Ian and Ping-Cho. The cloister is a space of revelations—both the Doctor’s loss and Ling-Tau’s news—where the group’s fragile plans unravel under the weight of the palace’s looming authority.

Atmosphere Tension-filled with whispered conversations and heavy silence, the cloister feels like a prison of stone …
Function Meeting point for desperate revelations and the unraveling of the group’s plans under the weight …
Symbolism Represents the moral and physical isolation of the group, trapped between Tegana’s manipulations and the …
Access Open to the group but heavily influenced by the Khan’s authority, with Ling-Tau as the …
Stone arches casting long shadows, creating a sense of enclosure and oppression. Whispered conversations that feel hushed and urgent, as if the walls themselves are listening. The distant echoes of the palace, a reminder of the Khan’s ever-present authority.

Organizations Involved

Institutional presence and influence

2
Mongol Empire (Kublai Khan's Court and Imperial Authority)

Kublai Khan’s Court is the unseen but all-powerful force behind the events of this scene. It is represented through Ling-Tau’s delivery of the accusations against Ian and Ping-Cho, as well as the Doctor’s loss in the backgammon wager. The court’s authority looms over the group, symbolizing the absolute power of the Khan and the fragility of their position. The organization’s influence is exerted through institutional protocol, where accusations are taken at face value and the group’s fate is determined by the Khan’s whims.

Representation Through institutional protocol (Ling-Tau’s delivery of accusations) and the Khan’s indirect authority (the Doctor’s loss …
Power Dynamics Exercising absolute authority over the group, with the Khan’s word as law and the group’s …
Impact The court’s actions reinforce the Khan’s unyielding authority, leaving the group powerless and desperate. The …
Internal Dynamics The court operates as a unified front under the Khan’s leadership, with no internal dissent …
To maintain the Khan’s absolute control over the court and its inhabitants, including the Doctor’s group. To use the TARDIS as a symbol of the Khan’s power and a tool to further his legacy, while neutralizing any threats to his rule. Institutional protocol (accusations and arrests carried out without question). Symbolic power (the TARDIS as a prize and the backgammon set as a tool of dominance). Messengers (Ling-Tau as the Khan’s voice, delivering his will without bias).
Tegana’s Faction

Tegana’s Faction is the hidden antagonist in this scene, driving the group’s entrapment through fabricated accusations and strategic manipulations. Though Tegana himself is not physically present, his influence is felt through Ling-Tau’s delivery of the news and the group’s growing desperation. The faction’s goal is to isolate and discredit the Doctor’s companions, tightening their control over the narrative and securing the TARDIS for Noghai’s invasion plans. Their actions are calculated and ruthless, exploiting the court’s protocols to advance their agenda.

Representation Through fabricated accusations (delivered by Ling-Tau) and the group’s growing sense of entrapment, Tegana’s faction …
Power Dynamics Operating under the radar, Tegana’s faction exerts influence by manipulating the court’s protocols and the …
Impact Tegana’s faction undermines the group’s credibility and unity, making it easier for the Khan to …
Internal Dynamics The faction operates with a single-minded focus on achieving Noghai’s goals, with Tegana as the …
To discredit Ian and Ping-Cho through false accusations, ensuring their imprisonment and weakening the group’s cohesion. To secure the TARDIS for Noghai’s invasion by eliminating the Doctor’s ability to reclaim it, leveraging the Khan’s distrust. Fabricated accusations (using Ling-Tau as a pawn to deliver the news). Exploitation of the court’s protocols (accusations taken at face value, arrests carried out without question). Psychological manipulation (creating a sense of hopelessness and division within the group).

Narrative Connections

How this event relates to others in the story

Across episodes

Threads arriving here 22

"Marco Polo’s reassurance in Episode 19 ('Don't worry, Tegana will bring them to Peking') is directly contradicted in Episode 20 when Tegana is the one holding Ian and Ping-Cho captive."

Khan commands immediate departure to Peking
S1E19 · Mighty Kublai Khan

"Tegana's violent attempt to abduct Susan in Episode 19 (stable scene) directly leads to his later role as a traitor allied with Noghai in Episode 20 (backgammon scene), where he manipulates events to destroy the Doctor's companions."

Tegana’s Abduction Attempt and Marco’s Authority
S1E19 · Mighty Kublai Khan

"Barbara's skepticism of Marco Polo's trust in Tegana in Episode 19 is validated when Tegana's treachery is exposed in Episode 20, leading to the companions' predicament."

Barbara challenges Marco’s trust in Tegana
S1E19 · Mighty Kublai Khan

"Ian’s confrontation with Marco in Episode 19 over the stolen TARDIS key sets up Marco’s acceptance of the TARDIS as a wager in Episode 20, which the Doctor ultimately loses, resulting in the TARDIS being out of the group’s control."

Ian confronts Marco over the Tardis
S1E19 · Mighty Kublai Khan

"Ian’s confession about time travel in 'Mighty Kublai Khan' leads to his later framing as a thief and traitor in 'Assassin at Peking,' where his explanation of the TARDIS’s nature is dismissed."

Ian’s desperate time-travel confession
S1E19 · Mighty Kublai Khan

"The theft of the TARDIS (Ep 19) leads directly to the Doctor’s failed attempt to bargain it back via backgammon (Ep 20), which results in the companions’ imprisonment and the deepening of Tegana’s power."

Ping-Cho’s theft and Ian’s TARDIS discovery
S1E19 · Mighty Kublai Khan

"Tegana’s manipulation of Marco Polo in Episode 19 (accusing Ian of betrayal and being the caravan's secret leader) prefigures her successful framing of Ian and Ping-Cho for theft and treason in Episode 20, leading to their imprisonment."

Tegana Accuses Ian of Betrayal
S1E19 · Mighty Kublai Khan

"The Khan's command to depart for Peking in Episode 19 (throne room scene) sets the stage for Tegana's treachery to be fully revealed in Episode 20 (cloister scene), as he uses the journey to implement his plot."

Khan commands immediate departure to Peking
S1E19 · Mighty Kublai Khan
Causal medium

"Ian's confession of stealing the TARDIS key (Episode 19) creates a narrative path that leads to the return of the TARDIS as a wager object (Episode 20). This steers the plot toward the Doctor's risky gamble in Episode 20."

Ian Confesses Theft as Marco Seizes Control
S1E19 · Mighty Kublai Khan
Causal medium

"Marco's testing of Ian's loyalty and Tegana's manipulation (Episode 19) directly leads to Tegana's ability to frame Ian and Ping-Cho for theft and manipulate Ling-Tau in Episode 20."

Marco Tests Ian’s Loyalty Through Tegana
S1E19 · Mighty Kublai Khan

"Ian’s confrontation with Marco Polo over the TARDIS in 'Mighty Kublai Khan' establishes his desperation to recover the ship, which directly drives his actions in 'Assassin at Peking' when he is implicated in theft and must defend himself."

Ian confronts Marco over the Tardis
S1E19 · Mighty Kublai Khan

"Marco Polo's disbelief in Ian's time travel claims and his refusal to return the TARDIS based on lies causes the Doctor to risk an all-or-nothing backgammon wager in Episode 20, as he seeks an alternate means to reclaim the TARDIS."

Marco tests Ian’s honesty with the TARDIS key
S1E19 · Mighty Kublai Khan

"Ian's confession of stealing the TARDIS key in Episode 19 (stable scene) creates lingering distrust that Tegana exploits in Episode 20, when Ian is falsely accused of theft and imprisoned."

Ian Confesses Theft as Marco Seizes Control
S1E19 · Mighty Kublai Khan

"The forced separation of the companions due to Kublai Khan's departure orders in Episode 19 echoes their separation through imprisonment and assassination attempt in Episode 20, amplifying the emotional cost of their temporal displacement."

Khan commands immediate departure to Peking
S1E19 · Mighty Kublai Khan

"Tegana's violent actions in Episode 19 (attempting to kill Susan) escalate into full-blown world conquest plans in Episode 20 (using the TARDIS to assassinate a ruler and destabilize an empire)."

Tegana’s Abduction Attempt and Marco’s Authority
S1E19 · Mighty Kublai Khan

"Marco Polo's refusal to return the TARDIS ('If I did Ian, I would give you the key.') escalates to his losing the TARDIS in a backgammon wager in Episode 20, stripping the group of their primary means of escape."

Marco tests Ian’s honesty with the TARDIS key
S1E19 · Mighty Kublai Khan

"The Khan's command for the group to accompany him to Peking (Ep 19) escalates into the Doctor's reckless backgammon wager (Ep 20), which leads to the loss of the TARDIS and the companions' imprisonment. This event represents a significant escalation in the group's predicament."

Khan commands immediate departure to Peking
S1E19 · Mighty Kublai Khan

"The group's forced departure to Peking without Ian and Ping-Cho (Episode 19) foreshadows the dire consequences revealed in Episode 20. This separation sets up the stakes and urgency of the situation in the following episode."

Khan commands immediate departure to Peking
S1E19 · Mighty Kublai Khan

"Tegana’s framing of Ian as a thief in Episode 19 ('Ian knows where the caravan is') predates her later false accusations against Ian and Ping-Cho in Episode 20 (theft, treason)."

Tegana Accuses Ian of Betrayal
S1E19 · Mighty Kublai Khan

"The conflict over trust and honesty between Ian and Marco (beginning in Episode 19) parallels the later betrayal by Tegana and Marco’s questionable loyalty to the Khan in Episode 20, both revolving around the misuse of trust for control or power."

Ian Confesses Theft as Marco Seizes Control
S1E19 · Mighty Kublai Khan

"Tegana's accusations against Ian (framing him as a betrayer for seeking the TARDIS) in Episode 19 parallels Tegana's later framing of Ian and Ping-Cho as thieves in Episode 20."

Tegana Accuses Ian of Betrayal
S1E19 · Mighty Kublai Khan

"Both Episode 19 (Doctor defies Khan) and Episode 20 (Doctor loses TARDIS via backgammon) center on the Doctor's physical limitations and pride colliding with powerful rulers—first Kublai Khan, then Tegana's manipulation."

Doctor defies Khan’s protocol
S1E19 · Mighty Kublai Khan
Threads leading onward 9

"The Doctor’s experience with betrayal and manipulation by Tegana in Episode 20 leaves him cautious and skeptical of Arbitan's blackmail in Episode 21. His reluctance to comply with Arbitan’s demands reflects his wariness of deception."

Arbitan’s Blackmail and the Teleportation Trap
S1E21 · The Sea of Death

"Barbara’s guilt over abandoning a vulnerable figure (Arbitan) echoes her earlier frustration with Ian’s imprisonment and her sense of responsibility to protect others."

TARDIS locked by Arbitan’s blackmail
S1E21 · The Sea of Death

"The companions’ failed escape and Ian’s imprisonment in Assassin at Peking drive his resourcefulness and impulsive decision-making in The Sea of Death, where he rescues Arbitan from a Voord attacker despite his own captivity. This reflects a continuity of defiance against authority."

Susan’s attack and Barbara’s fear of capture
S1E21 · The Sea of Death

"The Doctor's failure in his backgammon wager in Episode 20 and the subsequent loss of the TARDIS leaves a lingering sense of vulnerability that carries into Episode 21. This vulnerability is reflected in his overconfidence in the TARDIS's safety, despite Ian's cautious concerns about radiation."

TARDIS crew debates planet exploration
S1E21 · The Sea of Death

"The Doctor's failure to secure the TARDIS in Episode 20 escalates the immediate stakes in Episode 21, forcing the crew into a new set of challenges (retrieving the keys) and vulnerabilities (separation, forced compliance, and physical peril)."

Arbitan’s Blackmail and the Teleportation Trap
S1E21 · The Sea of Death

"The companions' ability to navigate traps evolves from political intrigue (Episode 20) to physical and teleportative threats (Episode 21)."

Arbitan traps crew with force field ultimatum
S1E21 · The Sea of Death

"The theme of the TARDIS crew's journey being derailed by a manipulative external force (Tegana in Episode 20, Acid Sea/Arbitan in Episode 21) creates a thematic continuity. Both episodes open with the crew believing they are in control of their travel plans, only to be forcibly redirected."

TARDIS crew debates planet exploration
S1E21 · The Sea of Death

"The Doctor's failed backgammon wager vs. Arbitan's teleportation trap both subject the TARDIS crew to external authority (Kublai Khan and Arbitan) that strips them of agency, forcing unplanned action."

Arbitan traps crew with force field ultimatum
S1E21 · The Sea of Death

"The theme of betrayal and manipulation by external forces (Tegana in Episode 20, Arbitan in Episode 21) recurs, with the companions being pawns in larger schemes. Barbara’s empathy for Arbitan mirrors her earlier frustration with the Doctor’s recklessness."

TARDIS locked by Arbitan’s blackmail
S1E21 · The Sea of Death

Themes This Exemplifies

Thematic resonance and meaning

Part of Larger Arcs

Key Dialogue

"POLO: "You will not believe this, but I swear it's true. They're playing backgammon for your caravan.""
"DOCTOR: "He gave me this. A consolation prize. A piece of his paper currency.""
"LING-TAU: "Two members of your party, the lord known as Ian, and the lady Ping-Cho, are being held under guard.""