Title: Concrete crime
Description: AKA Crime in Concrete
From the paperback edition's back cover:
"It started the night a safe-cracker was shot on a Stepney street by a soft-spoken killer.  Through an ingenious piece of detection -- and with the help of his underworld friends -- Tommy Hambledon succeeded in identifying the killer as the notorious Louis Magid.  The problem was to find a man so vicious and so feared that even criminals let him walk alone.

The trail led to a small French village, an old castle and a mysterious woman.  And, as Hambledon discovered, in crime the female of the species is indeed deadlier than the male."
Subjects: Fiction, Intelligence service, Intelligence service in fiction, Intelligence officers in fiction, Intelligence officers
Places: Great Britain, France