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 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.