Lady, Behave! is a 1950 thriller novel by the British writer Peter Cheyney.Reilly p.300 It was the third part in a trilogy featuring Johnny Vallon, a hard-drinking former army officer now working as a private detective .James p.202
References
Bibliography James, Russell. Great British Fictional Detectives. Remember When, 21 Apr 2009. Reilly, John M. Twentieth Century Crime & Mystery Writers. Springer, 2015.