After the discovery of Isabel's hair, those involved with the time capsule project from 1994 are at the forefront of Cormack's investigation. He makes a huge discovery when the blue car seen following Isabel on the night of the murder shows up in the time capsule documentary. Hazel, Isabel's sister, is unsure if she should trust Cormack or help him with the case, as she's harboring a past secret of her own that threatens to resurface.

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: Chloe is lying, Hector has no alibi, and Tasha claims Isabel was dating an older man in the weeks before her murder. Cormack tracks down the owner of the blue car, Ezekiel, who has since died. He discovers that Ezekiel's cousins went missing around the time of Isabel's murder-could they be connected to the case?

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. Billy Hopkins claims to have evidence implicating Steve Walcott in the crime, and he tries to blackmail Chloe and Steve with it. The Walcotts dismiss him, so Billy arranges to meet Cormack to share his evidence.

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. With all signs pointing to a cover-up of illegal labor practices, Cormack starts zeroing in on Steve. But after Cormack discovers Isabel's formal shoes out at Dalkeith, the case takes another turn towards a new suspect.

Cormack tries to track new suspect Anton down to question him, but he's disappeared. When Cormack and Hazel discover that Kalana is also missing, they fear the worst. Cormack and Hazel work together to decipher where Kalana was taken-which is the same place Cormack now believes that Isabel was killed. They race deep into the cane fields to find Kalana and confront Anton. But when they get there, they discover one final twist to this tale.