Doctor Who Lost In Time - Season 1 - "The Daleks' Master Plan" - episode 5 "Counter Plot" (Episode 4)
Plot: The Doctor and his companions have followed Mavic Chen to Earth, but Katarina is killed en route, Chen sends agent Sara Kingdom ro assassinate them; Bret is the first to die .
Episode Aired On:
Saturday, December 11 1965 59 years ago
