The police continue their investigation into Emily Harogate's death. Dr. Mullins thinks that her death is anything but accidental. DCI O'Connor is certain that it's friend or family-related. They know that Emily had come home an hour early and believe she went home to meet someone. The police find a motive when Emily's diary reveals that she and Michael Summerby had been seeing each but that she was going to end her relationship with him. Michael is arrested and charged with her murder. He's not very cooperative with his barrister and he is clearly hiding something. Meanwhile, Walker's son Richard is under arrest for injuring swans in a local pond. He's also in possession of a small amount of marijuana. The boy is sullen and Walker's a bit at a loss as to what is going on. The police decide not to press charges provided the boy undergoes therapy. Walker takes time off to deal with it all.