While working with Nico to try to stop the serial killer she believes means to kill Serena, Laura learns more about Nico's disturbing past; Tom worries Laura will discover his secrets.

Laura and Nico take off for Spanish Harbor to track down the identity of the killer. Tom, desperate to get Serena back, sends the police after them. Also, a witness leads Nico to confront Danny, who reveals the shocking truth about Susannah's murder.