Steed and Mrs. Peel try to trap a comic book killer.
The Saint investigates a racket in which illegal immigrants are being smuggled into Britain as slave labour in various Mafia-run establishments. His involvement leads him to personal tragedy and the head of the enterprise
Three captured Russian spies, one of whom is assigned to assassinate Steed, escape from a seemingly escape-proof prison hidden in Oldhill Monastery.
Having cornered Little John and Derwent in a cave, the Sheriff orders his men to smoke them out. The fire gets out of control, putting all of Sherwood in danger, and The Sheriff is left to seek aid from an unlikely ally.
After she has been rescued from the Sheriff's men, Robin allows two of his men to escort Ann de Brisac, a noblewoman, to a place where she claims to have hidden gold.