Lying in Wait by J.A. Jance

Detective J.P. Beaumont and his new partner, Sue Danielson, are called to the scene where a boat was set ablaze with the owner inside. The dead man turns out to be Gunter Gebhardt, whose wife Else attended high school with Beau. Who tortured and killed Gunter? Beau and Sue both wonder if his death had something to do with his cheating on his wife or perhaps his ties to Nazi Germany. In Lying in Wait, Jance writes another enjoyable entry in her long-running J.P. Beaumont series. (This is book twelve of the series and was first published in 1994.)