Dennis Nilsen’s one companion was a black and White mongrel bitch with a bad eye, called Bleep. She had paid no attention to the dead bodies in the flat, and retreated into the garden when Nilsen dismembered one. But she could sense when a body still had life in it. It was she who saved Carl Stottor by licking him and alerting Nilsen, who subsequently revived him. On Nilsen’s arrest, Bleep was taken to Hornsey Police Station where Nilsen could hear her whining from his cell. “I am ashamed that her last days should be so painful,” he wrote. “She had always forgiven me everything.” Bleep died under anaesthetic a week later.