Lennon Grant returns home after her first year at college and discovers that someone knows the terrible secret she and her friends swore to keep last summer.

The estranged friends reunite to try and figure who might have revealed their secret or who else knows what they did.

Unable to go to the authorities without revealing their secret, the crew needs to solve the mystery on their own; more bodies turn up as they realize they're being haunted and hunted.

Lennon uncovers secrets about her twin and begins to fear the worst about the true identity of the person murdering her friends; more murders shock the local community.

The police question everyone in town with any connection to the victims; the crew thinks they know who is after them and hunts for evidence implicating the town eccentric.