When a glamorous redhead wishes to locate the son she put up for adoption 32 years ago, it seems like easy money for PI Kinsey Millhone. But it becomes apparent this mystery woman has something to hide.
Meanwhile, the widow of Kinsey's old friend, Pete Wolinsky, needs help with her IRS audit. This seemingly innocuous task takes a treacherous turn when Kinsey finds a coded list. It soon leads her to an unhinged man with a catalogue of ruined lives left in his wake.
As Kinsey delves deeper into the investigation, she quickly becomes the next target of this tormentor. But can Kinsey prove her case against him before she becomes the next victim?