This feature-length episode was filmed to celebrate the 20th anniversary of Doctor Who. Starring five of the Doctors (Peter Davison, Patrick Troughton, Jon Pertwee, Richard Hurndall and Tom Baker). This special 25th anniversary edition includes new special effects and extra footage not included in the original broadcast.
You thought the First Doctor looked different in this episode? Richard Hurndall took on the part for Hartnell.Why couldn't Hartnell do it? Becuase he died 8 years earlier.Hurndall plays the character well though.This is a fun story,except Tom Baker didn't want to take part.So he didn't.Still pretty good 20 year anniversary special.