Attack of the Giant Leeches (originally to be called The Giant Leeches) is an independently made, 1959 black-and-white science fiction-horror film, produced by Gene Corman and directed by Bernard L. Kowalski. It stars Ken Clark, Yvette Vickers, Bruno VeSota and Jan Shepard. The screenplay was written by Leo Gordon. The film was released by American International Pictures on a double bill with A Bucket of Blood. Later, in some areas in 1960, Leeches played on a double bill with the Roger Corman film House of Usher. Attack of the Giant Leeches was one of a spate of "creature features" produced during the 1950s in response to Cold War fears; a character in the film speculates that the leeches have been mutated to giant size by atomic radiation from nearby Cape Canaveral. Plot In the Florida Everglades, a pair of larger-than-human, intelligent leeches live in an underwater cave. They begin dragging locals down to their cave, where they slowly feed on them, draining their victims of blood. Two of the first victims of the leeches are local vixen Liz Walker (Vickers), who has been cheating on her husband (Bruno VeSota), and Liz's latest paramour. Game warden Steve Benton (Clark) sets out to investigate their disappearance. Aided by his girlfriend, Nan Grayson (Sheppard), and her father, Doc Grayson, Benton discovers the leeches' underwater cavern. The creatures are destroyed when Steve, Doc and several state troopers blow up their underwater cavern using dynamite. However, in the film's closing moments the leeches distinctive sucking sounds are heard, suggesting they may still be alive. Cast Ken Clark as Steve Benton Yvette Vickers as Liz Walker Jan Shepard as Nan Greyson Michael Emmet as Cal Moulton Tyler McVey as Doc Greyson Bruno VeSota as Dave Walker Gene Roth as Sheriff Kovis Dan White as Porky Reed George Cisar as Lem Sawyer Joseph Hamilton as Old Sam Peters Walter Kelley as Mike Guy Buccola as Giant Leech #1 Ross Sturlin as Giant Leech #2 Production The film was shot over eight days, including outdoor sequences at the Los Angeles County Arboretum and Botanic Garden. During filming, Gene Corman came down with pneumonia and wound up in the hospital. Actress Yvette Vickers had appeared as the Playmate centerfold in the July 1959 issue of Playboy magazine, several months prior to the film's release. Producers Roger and Gene Corman begged special effects artist Paul Blaisdell to create the leech