Rick Napier is a fisherman struggling to make ends meet. The situation is made even worse when a local fishing vessel mysteriously disappears, along with a Coast Guard diver sent to search for the wreckage. As events unfold, he confronts the horrible reality of a top secret government experiment gone haywire, resulting in a hybrid creature of massive proportions. Escaped from captivity in a high tech facility in the Atlantic, it seeks to fill an insatiable appetite. Napier’s life turns upside down as he witnesses the carnage and devastation, and is forced to confront a Behemoth more terrifying than anything imaginable.

Isurus Palinuridae has escaped! After evading pursuit by its military creators, the shark-crustacean hybrid has disappeared in the Atlantic. In its search for food, it finds a new hunting ground off the shores of an island resort. Stuck in a dead-end animal caretaker job for the resort, Marine Biologist Julie Forster begins to notice strange events plaguing the island. Whales are turning up dead in the local waters, and fishermen are disappearing. After setting out for a task on the water, Dr. Forster discovers an enormous shark lurking off the island coast. With a thick exoskeleton, the creature is unlike anything she has ever seen. With an insatiable appetite, the creature attacks anything that moves. As events unfold, she discovers the truth about the creature’s origin, and the imminent threat from its very existence.