The Seventh Doctor's struggle to prevent technological catastrophe by dismantling Drathro's black light system while navigating deceptions, betrayals, and rival factions

Broken Tooth opens fire at the Underground Station, forcing the Doctor and his companions into desperate cover. The rogue has turned against former ally Balazar and now targets Glitz, revealing …

Humker and Tandrell detect a critical malfunction in the black light system while inspecting Drathro’s equipment. Tandrell suggests the Doctor may have caused the problem, but Drathro interrupts, already aware …

Faced with Drathro’s reckless exploitation of the black light system, the Doctor outlines the dire consequences of inaction to Peri. Their exchange reveals the immediate peril not just to the …