Someone is murdering unfaithful men and dismembering their bodies. To get to victims, the killer uses alibi services, companies that provide alibis to people who are having an affair. Special Agent Mary Stevens works in the Investigative Support Unit at the FBI. Can she stop the Alibi Murderer, when she doesn’t even know whether it’s a man or a woman?
Seeing her friend Veronica laid out in the morgue, Carolyn knows the investigators are wrong - she would not take her own life. When Carolyn gets a note threatening her off the case, she knows a killer is at large. She is determined to lure her prime suspect out of the shadows. But all the while a killer is coming straight after her.
Probation officer Carolyn Sullivan is a single mom intent on serving justice. Now she's pursuing a twisted killer in a case that will defy logic, evidence, and her own street smarts, pitting Carolyn against a man who may be the most dangerous she's ever known.