Y is for Yesterday by Sue Grafton: A review

We're coming to the end of Sue Grafton's alphabet mystery series; only Z to go after this one. I've been reading these books since the start, way back in the early '80s, and it's been an uneven ride as it often is with long-running series, but I've stuck with it because that's what I do and because I have a vast reservoir of affection for Grafton's Kinsey Millhone. In this one, Grafton again takes us back to the '80s when Kinsey was in her 30s. She gives us a two-pronged mystery. One prong involves the psychopathic serial killer from the last book and the other takes us back ten years to 1979 and a group of the most obnoxious and unlikable teenagers you are ever likely to encounter. The psychopathic killer from the X book is still on the loose and is a threat to society and to Kinsey who tried to put him away, as well as to two women who were formerly in his life. He's come back to Santa Teresa to try to tie up all those dangling loose ends, one ...