Ridley investigates a jewellery heist that turns into a murder case, working with an undercover source whose cover soon risks being compromised. Ridley checks out the manager of the jewellery company, thinking it could've been an inside job.

When a decomposed body is discovered deep in the woods, Ridley unearths a connection to a cold case. Ridley brings disgraced ex-copper Jean Dixon back to investigate. Jean's personal life with her new boyfriend Ross soon becomes compromised.

A man is shot dead during an illegal rave on a building site. Ridley and the team investigate, bringing them into the murky world of the victim's wealthy family who hold a closely guarded secret. Carol becomes worried about her son Jack.

In the serene village of Colden Vale, the tranquillity is shattered when Tara Dunning, a beloved local wife and mother, mysteriously vanishes. Ridley and Carol investigate and must locate her before it's too late, but a chilling discovery soon alters the course of their inquiry.