Entrapment (Part 1): Newly promoted, Commander Clare Blake (Amanda Burton) vows no cover-ups. When a previously convicted killer, James Lampton (Hugh Bonneville) gets released on parole, Blake's judgement is put to the test.

Entrapment (Part 2): DCI Mike Hedges conceals evidence of his involvement in the police shooting of an unarmed civilian, Lionel Cripps.

Virus (Part 1): Commander Blake is in trouble. Her relationship with convicted killer James Lampton made the tabloids, and her supervisors are not amused.