Robin Hodge

A group of teenage girls summon an ancient man-eating shark after messing with a spirit board that washes up on the beach. An occult specialist must enter the shark's realm to rid this world of the deadly spirit ghost once and for all.

Abby and Mike are on a long road trip to her sister's wedding when they stop to camp out for the night. Soon they're lost in the woods and at the mercy of nature--and something more sinister.