Detective Duff Unravels It TPB

Trade paperback. Detective John Duff is a detective with a difference. Using his knowledge of psychology, and an intricate network of carefully-placed informants, Duff manages to solve even the most difficult and mysterious cases.
This collection of eight short stories, each one a unique case with a different angle, has earned a place in the highly-respected Queen's Quorum as one of the major works in crime fiction.