Attack of the Giant Leeches (1959)

Approved  |   |  Horror, Sci-Fi  |  October 1959 (USA)
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Ratings: 3.5/10 from 2,991 users  
Reviews: 89 user | 53 critic

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 <>

Plot Summary | Plot Synopsis


Fear will pierce your flesh... Until every nerve in your body... EXPLODES! See more »


Horror | Sci-Fi


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Release Date:

October 1959 (USA)  »

Also Known As:

Attack of the Blood Leeches  »

Box Office


$70,000 (estimated)

Company Credits

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Technical Specs


Sound Mix:

Aspect Ratio:

1.37 : 1
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Did You Know?


The music score for this film was a stock score used previously in the film Night of the Blood Beast (1958), also produced by Gene Corman, brother of Roger Corman (it can also be heard in Beast from Haunted Cave (1959)). See more »


Mike wires the explosives to the detonator box and the plunger is all the way up as he walks over to Steve and the rest of the group. Steve then walks over to the detonator box to set off the charge but now the plunger is down, he has to pull up before he pushes it down to set off explosives. See more »


Featured in Svengoolie: Attack of the Giant Leeches (1996) See more »

Frequently Asked Questions

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User Reviews

Fun and educational too!
12 May 2005 | by (Chesapeake, VA) – See all my reviews

Attack of the Giant Leeches is a very fun movie if you like watching B-horror movies to laugh at how poorly they are made and scripted. A few things I learned from this movie:

1) Alligators aren't scared of men or animals but they may be afraid of minerals

2) Game wardens take their wives out on dates while they look for poachers

3) Atomic testing can cause giant mutations of just about anything (OK, OK, I already knew that. Most of these movies are about that.)

4) Women like being called "baby"

5) If you're in a boat for 2 days looking for something in the water, then you hear it sloshing around, it's OK to just go home without checking it out.

6) It's OK to have a picnic in a boat while looking for dangerous monsters.

7)Sleezy people always die in the end (I already knew that)

8) Good guys don't need a good reason to take their shirts off (Ok, I knew that, too)

The monster costume was so bad I couldn't make out the shape of the leech at all- it looked like what it was- a man in a cheesy suit.

I gave the movie a 2 because it really was bad, but don't let that stop you from watching it. It was 64 fun minutes of foolish pleasure from the king of B-horror, Roger Corman

17 of 26 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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