Coulson's advances on Gina take a sinister turn, and Fenton's corruption is exposed.

Tommy meets a bullied schoolboy, and Fenton enlists help from an unlikely party.

Coulson decides to Briggs’ misfortune to reassert his power at the police station. DI Sawyer questions a suspect with a shocking wartime story to tell.

A tragic event leaves the the team having to decide where their loyalties lie. Time is running out for Annie and DI Sawyer as they find it hard to unlock the dark secrets of the Petra Project.