Snowy, an albino elephant, is stolen from Noah's Ark, a specialist zoo run by Noah Marshall, specializing in distributing rare animals. Mrs. Gale's experience of living in Africa enables her to investigate when she puts herself forward as an ex-big game hunter applying for a position at the zoo. She uncovers an illegal ivory trade but ends up in the big cat's cage. . .

Also on The Avengers: Season 3, disk 5

The late reverend Harbottle was not what he seemed, as the gun and the antique German doll containing a micro-film,found in his belongings testify. In fact he was a member of Bibliotek, outwardly a religious organization but actually a front for a global crime syndicate. Posing as a man of the cloth, Steed enters their ranks and discovers a plot by certain factions to kill their leader, the bishop of Winnipeg. When the bishop perishes, Steed finds himself up against his deputy,gun-toting Sister Johnson.

Also on The Avengers: Season 3, disk 5

When five British agents working on the Corinthia espionage line between Austria and Hungary disappear, Steed is sent to investigate. Sadly for him, the sole survivor, Hal Anderson, points the finger at him as the traitor, and he sent to a brutal interrogation centre where a man known as the Wringer uses torture as part of his methods. Mrs. Gale does not doubt Steed's integrity and uncovers gross, not to say, criminal, negligence on the part of her superiors.

Also on The Avengers: Season 3, disk 5