In the conclusion of the six-part story "The Space Pirates," Argonite pirate chieftain Craven (Dudley Foster) draws up plans to destroy the Space Corps -- and the entire planet Ta -- with a super bomb. It is up to the Doctor (Patrick Troughton), his friends Zoe (Wendy Padbury) and Jamie (Frazer Hines), eccentric miner Milo Clancey (Gordon Gostelow), and reformed pirate-girl Madeleine (Lisa Danniely) to prevent this catastrophe. Written by Robert Holmes, "The Space Pirates, Part 6" originally aired on April 12, 1969. This episode apparently no longer exists. ~ Hal Erickson, Rovi