13 Nathan rang the doorbell and then stepped back to wait. Given the time, he was sure it would be a while before he got an answer. After about a minute he rang the doorbell again and knocked loudly; he hoped Richard Powers wasn’t the sort of person who could sleep through just about anything. Eventually a light came on, shining through the small window at the top of the front door, and a short while later the sound of footsteps descending the stairs reached the ears of the two detectives. “Hello, Mr Powers, I’m sorry to disturb you at such a late hour,” Nathan said when the door opened. “But I’m afraid we need to speak to you.” He hated being there for the second time in a day with bad news, but he had decided at the scene that it was best for him to tell Richard Powers what had happen