The brick foxhole

This book is the basis for the 1947 film noir classic "Crossfire". The story centers on a murder which appears to have no motive - at least not a motive that would help finger a suspect. Surprisingly progressive for a mid-40's story, the underlying morality message of this story is to expose the sin of prejudice, and advocate the virtue of tolerance. The target of hate in the book is gay, but that was too progressive for Hollywood. They changed the target of bigotry to be Jewish.