"When you travel around as much as I do, it's almost inevitable that you'll run into yourself at some point."
When the Doctor (Colin Baker) lands on a space station in the Third Zone, he suspects he's been there before and when he discovers his old assistant-Jamie-he's certain. Accompanied by Jamie and his present assistant Peri, the Doctor follows himself (Patrick Troughton) to 20th Century Seville. There he discovers his old enemies, the Sontarans, about to dissect him in a genetic operation. But just why are they operating on the Doctor? And how will their findings aid their enslavement of the Universe? Deadly questions to which the Doctors must find answers in order to escape their own excruciating death?
Originally transmitted February 16-March 2, 1965, this three part adventure starring Colin Baker features the late Patrick Troughton's final appearance as the Doctor.
Isolated music soundtrack
A Fix with Sontarans - a short mini-episode from 'Jim'll Fix It'. (approx 10 mins)
Behind the Sofa - Robert Holmes & Doctor Who - a featurette about the work of the acclaimed Doctor Who writer and script editor. (approx 45 mins)
Beneath the Lights - in studio during recording of part of episode one. (approx 25 mins)
Beneath the Sun - VHS-sourced raw takes from the location filming in Spain. (Approx 35 mins.)
Adventures in Time and Spain - Production Manager Gary Downie talks about the trials and tribulations of working in a foreign location. (Approx 30 mins)
Wavelength - a radio production from 1984 following the cast and crew as they record the story. (Approx 29 mins).
Photo Gallery (approx 8 mins)