Y is for Yesterday
In 1979, four teenage boys from an elite private school sexually assault a fourteen-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. As she is drawn into their family drama, she keeps a watchful eye on Fritz. But he’s not the only one being haunted by the past. A vicious sociopath with a grudge against Millhone may be leaving traces of himself for her to find...
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Sue Grafton
In Sue Grafton's bestselling mystery series, hard-boiled detective Kinsey Millhone is an ex-cop and rebellious loner. Now a private investigator, she solves all the most difficult cases in (fictional) Santa Theresa, California.
In her 30s, Millhone ages one year every 2 1/2 books, from 32 in A to 38 in W. http://www.suegrafton.com/bookshelf.php
Sue Grafton died in December 2017, and her daughter said in the death announcement that Sue had not wanted a ghost writer to continue the series, so the series ends with book 25, Y is for Yesterday.
Kinsey Millhone
Kinsey Millhone consists of twenty-five books. The current recommended reading order for the series is provided below.

