Showing A Shock to the System by Richard Stevenson

Young Paul Haig dies after hiring PI Donald Strachey. Despite his dislike of her, Strachey agrees with the boy's homophobic mother: Paul didn't commit suicide. But, she clings to deep denial about her son's sexual orientation. Conversion therapy - interventions to create ex-gays - get the once over in this Strachey mystery, and it ain't a pretty sight. 1995 Lambda Finalist