When Zoe reattaches an old piece of equipment to the TARDIS console, she, Jamie and the Doctor are very lucky to avoid a collision. But the place they find themselves in may be even more dangerous - because there they encounter another Doctor, a space pilot named Steven...and a young woman called Katarina who really shouldn't be there...CAST: Peter Purves (Steven Taylor/the First Doctor / Narrator), Frazer Hines (Jamie McCrimmon/ the Second Doctor), Wendy Padbury (Zoe Heriot/ Narrator), Ajjaz Awad (Katarina), Nicholas Briggs (the Daleks) More cast details to follow. CAST: Peter Purves (Steven Taylor / the First Doctor / Narrator), Frazer Hines (Jamie McCrimmon / the Second Doctor), Wendy Padbury (Zoe Heriot / Narrator), Ajjaz Awad (Katarina), Nicholas Briggs (the Daleks), Ian Crowe (Chancellor Atrias / Varx / Krell), Laura Elphinstone (Captain Parlos), Max Keeble (Piril / Togrok). Other parts played by members of the cast.