The Keeper of Traken (4) Doctor Who : Season 18 Episode 24
TV-PG BBC Television 25m
Aired: February 21st, 1981 @ 5:15 PM EST on BBC Television
With the merciless Melkur in control of The Source, the Doctor and his allies have only a slim chance of deposing him, which also puts the peace of the Traken Union in severe jeopardy.
