All 20 episodes from the first four series of the BBC crime drama in which a murder squad investigate complex cases in London. One of the detectives, DI David Bradford (Hugo Speer), takes the investigations more seriously when his own wife suddenly disappears.
Series 1 episodes are:
- 'The Politician's Son'
- 'Stag Night'
- 'Blood Lines'
- 'Sex Games'
- 'Connected'
Series 2 episodes are:
- 'The Dark'
- 'The Ultimate Price'
- 'Family Affairs'
- 'Turf War'
- 'Capture'
Series 3 episodes are:
- 'Grace'
- 'Cyber Bully'
- 'Blood'
- 'Control Freak'
- 'Crossing the Line'
Series 4 episodes are:
- 'Wake-Up Call'
- 'Fallout'
- 'Old Wounds'
- 'Amnesia'
- 'Vendetta'