First British paperback edition from 1985 published by Abacus
This is the second book by Derek Raymond, the pen-name of English author Robert Cook, in his Factory Series about an unnamed Detective Sergeant working in the Unexplained Deaths department. The Devil's Home On Leave follows the Detective trying to solve the murder of a body chopped up, boiled, and casually dispersed on the street amongst five plastic shopping bags. Featuring a gritty cast of London underworld characters, known as "Villains," and the Detectives who pursue them, Raymond's novel is filled with intrigue and written mostly using amazingly authentic British slang. Raymond himself was a British gangster at one point, among many other things in his lifetime, before later becoming a novelist, and is considered to be the founder of British Noir with this series. Although this is the second book of five in the Factory Series, The Devil's Home On Leave is the best one in my opinion.