Grant Henry, a writer of trashy paperbacks like The Dirty and the Dying, moonlights as a masked jewel thief who is usually caught in the act but is able to get away with his crimes by luring his female victims to bed.

Keen, quoted in the book The Worlds Greatest Scandals of the 20th Century, claimed: "Times were pretty hard and this is a comedy which I am not ashamed at having made.

The US Her Family Jewels/Handful of Diamonds version runs approximately 81 minutes (as opposed to the original 89-minute running time) and adds hardcore inserts[2] to every sex scene as well as an innocuous scene where the characters played by Terence Edmond and Diane Keen discuss the thief in a crowded pub, in which the hardcore inserts imply the two characters are masturbating each other under the table.

"), blue humour and smooth-talking cross-chat results in only one really delightful moment, when to its owners' dismay a suitcase full of pornographic film explodes its contents into the middle of the road.

The frequent sex frolics (one bout intercut with a wrestling match; another ornamented by the use of a vibrator) are conceived less extravagantly than usual.