Sleepyhead — Mark Billingham

Detective Inspector Tom Thorne now knows that three murdered young women were a killer's mistakes -- and that Alison was his triumph. And unless Thorne can enter the mind of a brilliant madman -- a frighteningly elusive fiend who enjoys toying with the police as much as he savors his sick obsession -- Alison Willetts will not be the last victim consigned forever to a hideous waking hell.