A serial killer has targeted Kevin as a potential victim, but Kevin is oblivious to the danger he's in. Instead he's obsessed with his immediate situation, which suggests he committed a violent crime. Although clues of his possible guilt abound, Kevin can't remember the night when the supposed crime occurred.As Kevin's life becomes a nightmare of agonizing uncertainty, two of his exes, Heather and Katie, decide to help him. Along with Andy, Heather’s current boyfriend, the two women delve into Kevin’s recent activities to get to the bottom of what happened on the night in question..The probe into Kevin's background leads to complications for the four investigators, a number of them personal. Of the four, who are the couples and who are the exes of the past and present? And what about Maddie, another ex-girlfriend of Kevin's, a woman whose new boyfriend has a mysterious past and a penchant for violence? How is this man related to the strange events that have turned Kevin’s life upside down?It is a good thing Wally, the labradoodle, and Cindy, the prescient cat, are around to help their humans untangle the mystery, while discovering which relationships are really over, which are not, and which one may supply a motive for a serial killer to commit another deadly deed.