The Sontarans prepare the Second Doctor to trigger their Kartz-Reimer capsule.
Quest roles:
Patrick Troughton(The Doctor), Frazer Hines(Jamie), Laurence Payne(Dastari), Clinton Greyn(Ivo), John Stratton(Shockeye), Jacqueline Pearce(Chessene), James Saxon(Oscar Botcherby)