In this 1978 horror film directed by Joe Dante, a small town becomes the target of a deadly threat when genetically modified piranhas are accidentally released into a local river. As the vicious fish make their way downstream, a group of unlikely heroes, including a private investigator and a local guide, must work together to stop the carnage before it reaches a popular summer resort. The film stars Bradford Dillman and Heather Menzies, and is known for its blend of suspense and dark humor. Notably, it was produced by Roger Corman, a legendary figure in the world of low-budget filmmaking. For those interested, the movie can be viewed for free on 123Movies / Movies123.