Ex-spy Jacob Keane is drawn back into the shadowy world of international espionage when his former partner Marta reappears after 17 years, her memory erased, on the run from a pair of deadly, psychopa...
A meeting in a London bus with jewel thief Lady Christina takes a turn for the worst for the Doctor when the bus takes a detour to a desert-like planet, where the deadly Swarm awaits....