S05E25 — Murder in Mind

Tom and Chris' longstanding friendship is put in jeopardy when Chris finds a fifty-year-old journal in her cellar. The journal appears to have been owned by a young woman and Chris discovers that it is the true account of a romance gone wrong and murder. Chris brings the journal to Tom, asking him to discover the identity of the murderer and bring them to justice. There are no names used in the journal, but nevertheless Tom works out that the owner is a local spinster - the last person you'd ever suspect of hiding a murder for fifty years. Now that the owner of the journal has been revealed, Chris wants the investigation dropped; she doesn't want to see this woman put behind bars. Tom isn't keen on throwing the woman in the cells either, but a murder has been committed and he has no choice but to continue with his enquiries. This puts Tom and Chris, normally allies, head to head, with Chris aggressively defending the woman and Tom bringing her in to face the murder charges.