After celebrating Gerry's birthday at a comedy club, the team reinvestigates the 25 year old disappearance of two young ploitical activists. Their inquiry leads to an extreme right-wing group with links to Ricky Hanson, the man who murdered Jack's wife.

Decades after a butcher went missing, his body is found neatly cut into pieces. While reinvestigating a related mlurder, the team uncovers more connections than they expected. Gerry is forced to connfront his past, and Sandra makes a shocking discovery.