Doctor Who: Timelash (Part 1)

"Timelash (Part 1)" is the first part of a two-part serial of the 1960s British television series Doctor Who. It is the tenth episode of series twenty-two and the fifth story-arc from that season. It is the 637th episode of the series overall. The episode was directed by Pennant Roberts and written by Glen McCoy and featured Colin Baker as the Sixth Doctor. The episode first aired on March 9th, 1985 on BBC1.