This is a classic murder mystery, a closed-room murder where the suspect list is limited to a specific group of people. The entire thing revolves around personalities and the breaking of alibis.
Set in an upscale psychiatric clinic, the administrative officer is found killed in the basement, stunned by a carved wooden phallus and then stabbed through the chest with a chisel.
Suspects include the officer’s cousin who inherits her money, someone who has been blackmailing former patients and was about to get busted, and people who have been trying to get the administrative officer fired for years.
It’s nice to see an old-fashioned murder mystery, not unlike Agatha Christie books. There’s a reason that P.D. James is so popular.