In the fifth episode of the six-part story "The Space Pirates," the Doctor (Patrick Troughton) and his friends are once more in the clutches of Argonite pirate leader Craven (Dudley Foster). Salvation arrives from an unlikely source: Madeleine Issigi (Lisa Danniely), the daughter of Craven's partner Dom (Esmond Knight). But the Doctor has precious little time to enjoy his freedom: He now faces an even deadlier peril than the pirates. Written by Robert Holmes, "The Space Pirates, Part 5" originally aired on April 5, 1969. This episode apparently no longer exists. ~ Hal Erickson, Rovi