"The Cornermen" brings the American Mafia to London, and blood runs in the streets. Scotland Yard eventually brings things under control. There is plenty of action in "The Cornermen," but the writing is clumsy and the construction awkward. There are no believable characters here—Gardner's heroes and villains are all cardboard figures. But at least they create a sizable racket.

Newgate Callendar, in a review of "The Cornermen," in The New York Times Book Review, September 26, 1976, p. 36.