Y Is for Yesterday: Kinsey Millhone Alphabet, Book 25 (Unabridged‪)‬

1979: four teenage boys from an elite private school sexually assault a classmate - and film the attack. Not long after, the tape goes missing, and the suspected thief, a fellow classmate, is murdered. In the investigation that follows, one boy turns in evidence for the state, and two of his peers are convicted.

1989: one of the perpetrators, Fritz McCabe, has been released from prison. Unrepentant and angry, he is a virtual prisoner of his parents - until a copy of the missing tape arrives with a ransom demand. That's when the McCabes call Kinsey Millhone for help.