Good work by the police, probably not the easiest person to track down. Sexual predator IMO as is usually the case and I'd be amazed if he doesn't have some history, though whether we'll ever get to know about that is doubtful. There were some twists and turns in this case but as ever the simplest motive seemed to be the correct one. Young woman going about her life attacked for seemingly no reason, isn't it always some depraved sicko?