Attack of the Giant Leeches (1958)

35mm film, black and white
mono, English

An American science fiction film directed by Bernard L. Kowalski.

Plot Summary

There's something nasty stalking the woods – giant are abducting and killing people, operating from their subterranean lair in a network of . The authorities must act quickly if they are to prevent more deaths and disappearances.


Directed by: Bernard L. Kowalski
Copyright MCMLVIII [1958] by Balboa Productions
Executive Producer: Roger Corman
Produced by: Gene Corman
Original Story and Screenplay by: Leo Gordon
Director of Photography: John M. Nickolaus Jr
Edited by: Carlo Lodato
Associate Editor: Tony Magro
Music by: Alexander Laszlo
Sound: Al Overton
Art Director: Daniel Haller

Ken Clark (Steve Benton)
Yvette Vickers (Liz Walker)
Jan Shepard (Nan Greyson)
Michael Emmet (Cal Moulton)
Tyler McVey (Doc Greyson)
Bruno Ve Sota (Dave Walker)
Gene Roth (Sheriff Kovis)
Dan White (Slim Reed)
George Cisar (Lem Sawyer)

Alternative Titles

Attack of the Blood Leeches
Demons of the Swamp – UK title
The Giant Leeches – advertising title
She Demons of the Swamp

Extracts included in
Clive Barker's A-Z of Horror: The Devil You Know (1997)
Shiver and Shudder Show (2002)



  • Delirium no.25 (2020) p.10 – short review (Corman's greatest creatures by Chris Alexander)


  • American International Pictures: A Filmography by Robert L. Ottoson pp.43-44 – credits, synopsis, review