When a time capsule is opened and a secret is unearthed, Detective James Cormack is put on the trail of a murderer from a 1994 case that was never solved.

After the discovery of Isabel's hair, those involved with the time capsule project in 1994 are at the forefront of Cormack's investigation.

Rumors are spreading around Ashford, and suspicion lands on Joe, Isabel's father. As Cormack continues to interview the time capsule students, more secrets emerge.

Cormack investigates the link between Ezekiel's missing cousins-"the lost boys"-and Isabel's murder. He probes Joe about his connection to Ezekiel, but Joe refuses to cooperate.

Turner concludes that Billy's death was an accident, but Cormack suspects foul play. Cormack believes that Billy's death, the missing workers, and Isabel's murder could be connected. The case takes another turn towards a new suspect.

Cormack tries to track Anton down to question him, but he's disappeared, and when Cormack and Hazel discover that Kalana is also missing, they fear the worst.