Lake Lucas is a place of tranquility. Known for its long trails, camping grounds, and fishing, it is a popular place for hikers, campers, and anyone looking to get away from society. For ex-con Valentine Krane, it is the perfect place to start fresh and new. Unfortunately, nature has other plans. When someone from his past is violently murdered in the lake, Valentine finds himself under suspicion. The police investigate him, oblivious to the real threat lurking under the tranquil water.

Scar is a killing machine. Born from DNA spliced between the extinct Megalodon and modern-day Great White, he has a viciousness that transcends time. His evil is reflected in his eyes, his savagery in his two-inch serrated teeth, his ruthlessness in his trail of death. After escaping captivity, the killer shark travels to the island community Cross Point, where prey is in abundance.

A series of violent shark attacks off the shores of northern California draw the attention of pessimistic Detective Luke Jansen. Despite reports of shark sightings, the injuries are more reminiscent of a chainsaw-wielding maniac. Things get stranger when marine biologist Elise Sheldon encounters the creature. Exhausted and traumatized, her claims that the beast is a Helicoprion are dismissed. With little help from the police department, Luke and Elise form an unlikely alliance that puts them face-to-face with a violent man-eating shark, and its terrifying reason for existing.

The brightest light casts the darkest shadow. Shadows can obscure the worst of horrors. No shadow is darker than those cast by time. No horror is worse than vengeance. Retired Marine Sergeant Rick Eilerman thought his past was behind him. But that allusion breaks when armed men capture him and his girlfriend in the dead of night. After awakening on a boat, he is reunited with the same fireteam he commanded in the military. Very quickly, it becomes clear that someone chose them for a reason.

It was supposed to be an easy assignment: a rescue mission to a research facility on a remote South American island. The science team has gone radio silent. Now it is up to Ronald Baker and his band of mercenaries to find the staff and figure out what went wrong. Things quickly go awry when the rescue team sets foot on the island. They discover decimated boats, the dock in shambles, and nobody in sight.