|The Fourth Man|
|Series 7, Episode 10|
|Air date||12 November 2010|
|Written by||Julian Simpson|
|Directed by||Julian Simpson|
When the team reinvestigates a 30-year-old safety deposit robbery, they find themselves unwittingly drawn into a case involving high-level police corruption that threatens the future of UCOS.
- This was the third episode to be written and directed by the same person, Julian Simpson.
- The DVD release incorrectly named this episode as "The Fourth Men"
- Brian Lane - Alun Armstrong
- Jack Halford - James Bolam
- DSI Sandra Pullman - Amanda Redman
- Gerry Standing - Dennis Waterman
- D.A.C. Strickland - Anthony Calf
- Frank Patterson - Phil Daniels
- Miranda Armstrong - Genevieve O'Reilly
- Tony Mills - Brian Croucher
- DAC John Felsham - John Shrapnel
- George Milligan - Jimmy Yuill
- Christine Johnson - Heather Wright
- Elaine Murray - Rosalind March
- Michael Denby - Roy Boyd
- Anne Hargreaves - Georgie Glen
- Nurse - Aimee Parkes