Alice Arno

In Athens a collection of emeralds is successfully stolen by a team of robbers, led by safe-cracker Azad. Things go smoothly until they miss the ship by which they planned their escape; a police chief pursues Azad while he waits for the next ship to set off.

Roger Santet is a convicted murderer sprung from prison by the Sicilian clan headed by the aging Vittorio Manalese. They conspire to steal a large cache of jewels from an exhibit in Rome. As they are preparing for the heist, the mobster's American friend Tony Nicosia suggests that a better way to get the rocks would be to hijack the transport plane while it is en route to New York. The dogged inspector Le Goff is using all the available resources to thwart their plans. Though the heist itself is successful, Santet finds himself trapped by the mob because of his fling with Manalese's daughter-in-law

A young woman is hired to care for an elderly man who lives on an island off the Greek coast. When she arrives there the man warns her that his daughters are evil and dangerous. The woman discovers that one of the daughters is a crazed nymphomaniac who pursues, and seduces, everyone in the house, including her crippled sister.