Sarah Jane's K9

K9 rolls forward on sturdy treads, his domed sensor array tilted toward danger like a metallic head cocking to attention. His voice modulator emits the mechanical urgency of a bark, insisting in rapid bleeps that Sarah Jane must not leave. The cheerful blue and silver housing contrasts with the stark warning in his tone, a loyal guardian torn between programming and genuine concern. His presence amplifies the domestic threat making the ordinary West London road feel suddenly charged with alien peril.