When I was a kid, I can remember watching this retro Doctor Who adventure in the late sixties. It was when Patrick Troughton was the Doctor with Fazer Hines as Jamie and Deborah Watling as Victoria. Most of this story is now missing from the BBC archives, but on YouTube, a person called android65mar has taken the trouble to put together a CGI reconstruction. It is in episodes and is well worth a look. So visit YouTube and look up android65mar to see other parts of this exciting retro styled reconstruction.