E1 • Life Sentence: Part 1

1. 51 min
2. TV-MA
3. CC

When someone threatens the surviving victim of the notorious serial killer 'The Gambler', the team must visit the killer himself to discover if he had a partner.

E2 • Life Sentence: Part 2

1. 51 min
2. TV-MA
3. CC

The Gambler's suspected partner is seemingly active once more and they have abducted a young woman. Can the team reach her in time?

E3 • Deathwatch: Part 1

1. 51 min
2. TV-MA
3. CC

Harry Newman is an old man, dying in a London nursing home. When he makes a deathbed confession of 12 separate 'unauthorised killings', Boyd's team is called in.

E4 • Deathwatch: Part 2

1. 51 min
2. TV-MA
3. CC

With Grace recovering from her attack, the team continue on their quest to identify whoever commissioned the murders and to find out what really happened to Frank Sutton.

E5 • Special Relationship: Part 1

1. 51 min
2. TV-MA
3. CC

The team discover a trail of intrigue when they reinvestigate the murder of Home Office adviser Katherine Reed, a radical academic who swapped sides to join the establishment.

E6 • Special Relationship: Part 2

1. 51 min
2. TV-MA
3. CC

The team's hunt for the murderer leads them further up the political ladder, and pressure is applied from above as Boyd closes on his quarry despite the government’s secrecy.

E7 • Thin Air: Part 1

1. 51 min
2. TV-MA
3. CC

When Joanna Gold's famous red dress is discovered in a lock-up at Kings Cross, Boyd is certain his team can track down her killer.

E8 • Thin Air: Part 2

1. 51 min
2. TV-MA
3. CC

Threatened by the investigation, Joanna Gold’s killer begins to stalk her sister, Clara. She persuades Boyd to let her wear the red dress in an attempt to catch her stalker.