In the fourth episode of the six-part story "The Space Pirates," the Doctor (Patrick Troughton) and his companions have become enmeshed in a series of intrigues involving the Instellar Mining Corps, a band of renegade Argonite pirates, and eccentric mining expert Milo Clancey (Gordon Gostelow). Captured by the pirates, the Doctor, Jamie (Frazer Hines), and Zoe (Wendy Padbury) are aided in their escape by the enigmatic Clancey. Unfortunately, the foursome runs right into a trap set by pirate chieftain Craven (Dudley Foster). Written by Robert Holmes, "The Space Pirates, Part 4" originally aired on March 29, 1969. This episode apparently no longer exists. ~ Hal Erickson, Rovi