With the aid of a mole, BIG O conducts a worldwide assassination campaign against various secret agents working for ICE (Intelligence Counter Espionage).

Posing as a Chicago gangster named Jim Peters, an alias of "Lash" Petroni, Helm travels to the French Riviera, flying into Nice Airport.

They escape and end up in a dockyard where Helm fights Ironhead until Suzie brings a giant magnetic crane over his head and picks him up.

Euan Lloyd, a former Warwick Films publicity specialist and producer of The Poppy Is Also a Flower, assisted Allen in production chores.

Like its predecessor The Silencers, it took a much more light-hearted approach to the source material, treating it more as a gadget-laden spoof of James Bond films than Hamilton's original serious spy story.

Unlike Hamilton's world weary professional, Martin plays Helm with his own persona, a fun-loving, wise-cracking alcoholic playboy.

Co-starring is Karl Malden as Dr. Julian Wall, whom New York Times film critic Bosley Crowther describes as a "Kansas type Dr.

[5] Also in the film are Tom Reese as his Oddjob-type henchman named "Ironhead" and Beverly Adams returns as secretary Lovey Kravezit, as do the Slaygirls, a group of beautiful and dangerous women.

Columbia starlet Camilla Sparv plays Malden's assistant Coco Duquette and Soon Tek-Oh makes a brief appearance as a Japanese agent killed in his bath.

[12] Henry Levin had previously directed the Dino De Laurentiis superspy film Kiss the Girls and Make Them Die for Columbia.

Like its predecessor, the film is full of jokes,[13] bizarre secret weapons like a Hy Hunter Bolomauser modified AR-7 pistol configuration that only fires ten seconds after the trigger is pulled, plenty of beautiful women, and fashionable mod 1966 costumes by Moss Mabry.

A fifth film, The Ravagers with Sharon Tate reprising her Wrecking Crew character and Dean Martin doing a dual role, was announced but never produced.

In addition to the driving main theme and spy time score, Schifrin includes some jazz pieces, with one having a cover version by Bud Shank, as well as a song with lyrics by Howard Greenfield ("I'm Not the Marrying Kind") for Martin that, due to contractual rights, didn't appear on the soundtrack album.

[22] Billy Strange slightly changed Schifrin's main title to be an "original" composition entitled "Spanish Spy" on his James Bond Double Feature album.