P is for Peril by Sue Grafton

In her latest adventure, Kinsey Millhone enters the world of noir. A shadowland in which the mysterious disappearance of a prominent physician leads Kinsey into a danger-filled maze of duplicity and double-dealing... It is now nine weeks since Dr Dowan Purcell vanished without trace. The sixtynine-year-old doctor had said goodnight to his colleagues at the Pacific Meadows nursing home, had climbed into his car and driven away - never to be seen again. His embittered first wife Fiona is convinced he is still alive. His second wife, Crystal - a former stripper forty years his junior - is just as sure he is dead. Enter private investigator Kinsey Malone, hired by Fiona to find out just what has happened to the man they loved. Enter also Tommy Hevener, an attractive flame-haired twenty-something who has set his romantic sights on Kinsey. And Tommy is a man with a very interesting past...