The Devil You Know (Part 2): Commander Blake and DCI Doug James pursue two former patients as suspects in the case, Eric Thornton, a schizophrenic and John Littlewood, a violent drug user. DCI James remains skeptical about the direction of the investigation.

Fraudster (Part 1): When self-made millionaire Donald Griffith is found dead in his swimming pool, it seems like justice.

Fraudster (Part 2): Commander Blake learns that Griffith's wife and mistresses all stand to benefit if his death was not a suicide.