92 user 45 critic

Attack of the Giant Leeches (1959)

Approved | | Horror, Sci-Fi | October 1959 (USA)
A backwoods game warden and a local doctor discover that giant leeches are responsible for disappearances and deaths in a local swamp, but the local police don't believe them.


(original story), (screenplay)

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Complete credited cast:
Liz Walker
Jan Shepard ...
Nan Greyson
Michael Emmet ...
Cal Moulton
Tyler McVey ...
Bruno VeSota ...
Gene Roth ...
Sheriff Kovis
Porky Reed (as Daniel White)
George Cisar ...
Lem Sawyer


After local-moonshine swilling trapper Lem Sawyer sees a giant creature, people start disappearing. While searching for illegal traps Steve Benton and Nan Greyson, his girl-friend find Lem dying with giant sucker wounds on his body. One couple Liz Walker and Cal Moulton, forced into the water by her enraged husband Dave Walker, gets taken by the leeches. When police refuse to believe Dave's story, he hangs himself. Soon after this, 2 more trappers disappear, the local Game Warden Steve Benton gets involved. He and Nan's father Dr Greyson realize that the people were taken by the leeches and the leeches live in caves under the swamp. Using dynamite, the 4 missing bodies are discovered and the leeches are destroyed. Written by Matthew Soffen <matt@tuxie.aai.com>

Plot Summary | Plot Synopsis

Plot Keywords:

leech | swamp | cuckold | death | monster | See All (41) »


Massive Blood Sucking Monsters! See more »


Horror | Sci-Fi


Approved | See all certifications »

Parents Guide:





Release Date:

October 1959 (USA)  »

Also Known As:

Attack of the Blood Leeches  »

Box Office


$70,000 (estimated)

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:

Aspect Ratio:

1.37 : 1
See  »

Did You Know?


The film's Spanish title is "El Pantano Diabolico", meaning "The Diabolical Marsh." See more »


Cal and Dave are talking outside the general store. The reflection of the mike boom can be seen in the roof of the car. See more »

Frequently Asked Questions

See more (Spoiler Alert!) »

User Reviews

Surprisingly good for a bad film
17 May 2005 | by (Minneapolis, MN) – See all my reviews

Regardless of the rabid fans of MST3K (myself included), attack of The Giant Leeches isn't the horrid film they make it out to be. Certainly it is low budget, but trying to shine through the lackluster production is a film that has some good writing, few plot holes, and exhibits an actual knowledge of the subject (swamps, critters, rednecks who are a danger to themselves and others...).

As far as Corman flicks go, this one has a good feel to it. Some drama, tragedy, comedy (well, some that was intentional), and an attempt at a real story. The screenwriter, Leo Gordon, has created a good feel for the south, and is an accomplished (although not great) practitioner of his trade. So, laughs aside, watch this movie again and focus on the plot when you can. There is no hocus pocus, minimal pseudo-science, and some likable characters.

Oh yeah, and please don't be a danger to yourself or others...

30 of 32 people found this review helpful.  Was this review helpful to you?

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Who played 'allen' or 'arron' or whatever? The swarthy young guy? marymorrissey
Steve's buddy Mike construct
'Leeches'? ang-son
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