Pascoe and Dalziel are called in to investigate. They encounter a web of relationships which hint at murder, not suicide. Pat's step-mother, Kay Kafta, is a particularly malicious woman (in the opinion of some) and is a suspect, as is Ashur-Mac, who is dealing in arms.

Detective Superintendent Dalziel has had a previous relationship with Kay Kafta, which compromises his handling of the case. There are many questions about the relationship of Kay and Pat when he was young, and many conflicting stories about them. It becomes a difficult job for Pascoe to filter through these to arrive at the surprising solution to the closed door mystery.

This is an entertaining and intelligent police procedural. The plot is a complex and intricate one, forcing the reader to be on the alert constantly. The characters are distinct and memorable. Dalziel's constant musings are extremely literate and witty. Hill presents a well-written, erudite story.