When Sally Ross is brutally raped and her boyfriend murdered, the case is turned over to Rockton detectives Max Larkin and Jesse Fairlane, neither of whom is thrilled to have FBI agent Tim Michaels horn in on their work. In fact, they’re not even sure they trust him.
Michaels explains, however, that Sally’s rape is one in a long string of similar rapes throughout Illinois and that his agency is eager to cooperate with the Rockton police department to solve this case. He’s brought along files on all the previous victims, and with the eager assistance of newly-minted and very eager Detective Jim Royter, the older detectives and Agent Michaels begin the tedious work of sifting through over 20 rape cases, some over 20 years old, in search of commonalities.
While his victims run the gamut from professors to waitresses, the rapist is consistent in his insistence that these women are his wives, and he somehow manages to break into their homes and lurk in their closets or under their beds for up to several days before actually raping them. Some he has located after they moved due to his previous attack and has raped them again.
Michaels keeps making mysterious calls; Royter is distracted by his desire to find out more about his mother’s tragic death five years earlier, Jesse is struggling to decide if she’s lesbian, straight or bisexual, and Max has fallen in love and is terrified of rejection. Somehow the quartet must put aside all their personal issues, build mutual trust, and stop this monster from raping more women.
In the course of the investigation, they discover that the rapist has a blue star tattoo on his left shoulder. Upon learning that this was a common tattoo among the baseball team of a nearby university, the investigators seek to narrow down the number of potential suspects from over 20 years of team members.