Winner of the CWA Gold Dagger for Non-Fiction. A letter arrives. You’ve got an appointment with a trainee clinical psychologist on April 29, 2008. You don’t attend. Another letter arrives. It says they don’t normally reschedule appointments, but they know this is hard for you, so they’re offering you another appointment. It’s on May 13, 2008. You don’t attend. Two years later you shoot three people and shoot yourself. You will be called a monster. You will be called evil. The prime minister, David Cameron, will stand up in Parliament and say you were a callous murderer,...