Leeches!

At Lakecrest College, members of the swim team use steroids to improve their performance and physique. While swimming in the campus lake, the athletes are bitten by leeches. After consuming the hormone-laced blood of the swimmers, these creatures undergo a mutation, growing to an unnatural size. The transformed parasites then begin attacking the student population throughout the campus.

Directed by David DeCoteau, this horror thriller is the ninth of 22 films he has directed, following Final Stab and preceding Possessed. The movie was written by Michael Gingold and produced by David DeCoteau and Gary Barkin. The ensemble cast includes Matthew Twining, Josh Henderson, Stacey Nelson, Alexandra Westmore, Michael Lutz, and Charity Rahmer.

The film was released on August 19, 2003, with a runtime of 85 minutes. It was produced in the United States by Rapid Heart Pictures and Sidekick Entertainment. Audience reception was generally poor, as indicated by a 3.1 rating on IMDb based on 1,300 votes and a 3.6 rating on TMDB from 26 votes.