Private investigator Riley Sullivan faces her toughest case yet. Her business partner and friend, Cooper Deagnan, wakes in his bed to find a dead woman with blood trailing down her face from a bullet wound. The gun lay between them. She's no stranger but a previous one-night stand gone wrong. Could Cooper have been driven to kill her or is this connected to something much darker?It's the question men across Little Rock are made to answer when the slayings, known as the Missing Time Murders, paralyze the city. The killer's reign of terror on couples has only just begun.The crime pits Cooper against his friend, Det. Luke Morgan, for the first time in his life. Riley and Luke must use every resource they have to stop a serial killer who leaves few clues, increasingly frenzied crime scenes, and complicated witnesses who have little information to share.Can they catch a killer who the victims see but no one remembers?