Kubiak's Daughter by Stephen Lindley

Ex-Chicago cop Kubiak wants to enjoy his retirement, but when his married daughter fails to show up for her birthday party and third-rate burglar Baumgarten wants to hire him to prove a suicide a homicide, everything goes to pot! How could his son-in-law be involved in a suspicious murder? Kubiak tries to unravel the mystery and clear his son-in-law's name before the police arrest him for murder. A great "Perry Mason" type of mystery. A good read. Sandy Penton.