Plot Summary:Maths professor Adam Capstone is killed by a parcel bomb. Whilst his brother David, with whom he fell out over money, points the police to threatening letters Adam received his wife Elizabeth admits that he was a philanderer and Frank Guitteau claims that Adam raped his student daughter Paula, who committed suicide after he was acquitted. Sarah Alderwood, carer for Elizabeth's invalid father Donald had a child by Adam and student Kate McMurdock accused him of plagiarizing her work. All are suspects. Then David receives a parcel bomb and Lewis and Hathaway are with him when it explodes.
A summer’s day in Oxford is screwed apart when a parcel bomb explodes. The team are called in to investigate, but the victim is a womanizer, having been known to have had numerous affairs with younger women. With his six-month trip to New Zealand with Hobson on the horizon, Lewis is in a race against time to save his career and relationship.