Piranha (1995)

In the shadowy world of private investigation, Maggie McNamara from Lyon Investigation is hired by the affluent J.R. Randolph to unravel the mystery of his niece's disappearance alongside her boyfriend. Deeply immersed in the case, Maggie teams up with the solitary environmentalist, Paul Grogan, their united efforts leading them to a desolate, forgotten army facility. Driven by an ominous curiosity, Maggie decides to drain the facility's pools, hoping to uncover the fate of the missing teenager. In the midst of their exploration, they are unexpectedly attacked by a woman wielding a crowbar. They manage to subdue her, yet she slips away, leaving behind a trail of questions. The woman in question is revealed to be Dr. Leticia Baines, a scientist engrossed in a dangerous game of genetic manipulation. Her subjects of interest are a hybrid species of piranha, engineered to withstand both fresh and sea waters with a terrifyingly insatiable appetite. Unbeknownst to them, Maggie and Paul have inadvertently unleashed these genetically enhanced piranhas into the Lost River Lake. The predatory fish are now poised to wreak havoc on Randolph's luxurious resort, threatening the lives of all in their path. Despite their desperate warnings to the local Sheriff, the corrupt lawman, under Randolph's influence, dismisses their claims, locking them up instead to ensure the planned resort party goes uninterrupted. Caught in a race against time, Maggie and Paul must navigate a web of corruption, scientific malpractice, and imminent danger. Can they halt the piranhas' relentless march towards the ocean, prevent their spawning, and save the unsuspecting resort-goers from a gruesome fate? Uncover the chilling answers in the thrilling ride that is 'Piranha.'

Piranha is a horror movie featuring William Katt.

Piranha is currently streaming for free (ad-supported) on Crackle, Freevee, Plex, Plex Player, Shout! Factory TV, The Roku Channel and Tubi TV and it's also available on fuboTV.

It is also possible to buy Piranha on Amazon Video.