You Can Call It a Day is a 1949 thriller novel by the British writer Peter Cheyney who had gained a reputation for writing popular novels in the American hardboiled style.Reilly p.300 It was the first of a trilogy featuring the private detective Johnny Vallon, a hard-drinking former army officer.James p.202 It was also published under the alternative title of The Man Nobody Saw.
References
Bibliography James, Russell. Great British Fictional Detectives. Remember When, 21 Apr 2009. Reilly, John M. Twentieth Century Crime & Mystery Writers. Springer, 2015.
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