Y IS FOR YESTERDAY begins in 1979, when four teenage boys from an elite private school sexually assault a 14-year-old 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 state’s evidence, and two of his peers are convicted. But the ringleader escapes without a trace. Now, it’s 1989 and one of the perpetrators, Fritz McCabe, has been released from prison. Moody, unrepentant and angry, he is a virtual prisoner of his ever-watchful parents --- until a copy of the missing tape arrives with a ransom demand. That’s when the McCabes call Kinsey Millhone for help.