Jenny Cain is shocked by the appearance of David Mayer, who claims to be her policeman husband's son and wants him to help investigate his parents' alleged murder/suicide, until carefully placed clues lead them to another violent murder.

Jenny Cain would never forget the hot Massachusetts summer day fate knocked at her door. Fate was a teenaged boy with rumpled clothes, a motorcycle, and a shocking but credible story: Jenny's husband, Geof, was his biological father. The boy, David Mayer, wasn't looking for an emotional reunion, but he did have an agenda. His "parents" -- and he was quick to make the point that Geof was nothing to him -- died earlier in the year, a murder/suicide according to the police. The cops were wrong, David said, and Geof was a cop, and he owed it to David to prove that Ron Mayer did not kill his invalid wife and then himself. As David lured Jenny and Geof to carefully placed clues, including two bizarre videotaped confessions of "sin," another murder was committed. And Jenny knew that no matter what the truth was about David Mayer's parents, her own life and marriage would be altered forever....