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.

Rumours spread around Ashford, and suspicion lands on Joe, Isabel's father; as Cormack interviews the time capsule kids, more secrets emerge.

Turner concludes that Billy's death was an accident, but Cormack suspects foul play and believes it's linked to the missing workers and Isabel's murder.

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.