Award-winning investigative reporter Robert Kolker delivers a haunting and humanizing account of the true-life search for a serial killer still at large on Long Island, in a compelling tale of unsolved murder and Internet prostitution. One late spring evening in 2010, Shannan Gilbert, after running through the oceanfront community of Oak Beach screaming for her life, went missing. No one who had heard of her disappearance thought much about what had happened to the twenty-four-year-old: she was