Helicoprion

In a gripping tale of suspense, Detective Luke Jansen investigates a series of brutal injuries along the northern California coast that bear an unsettling resemblance to chainsaw attacks rather than shark bites. Marine biologist Elise Sheldon, who claims to have encountered a long-thought-extinct creature known as the Helicoprion, seeks Jansen's help after being dismissed by others. Together, they form an unlikely alliance to uncover the disturbing truths behind the violent events, leading them to confront a menacing predator lurking beneath the surface.