Deep Water

Census claim confirmed. Harper & Brothers (New York) 1957 is the true first edition; the Heinemann (London) edition followed in 1958, so US precedence is not in question here. The Heinemann 1958 is nonetheless collected: it is the first of the sixteen Highsmith novels Heinemann published in Britain and is reported to be the scarcest of the early Highsmith British firsts, Heinemann having underestimated the print run in the wake of The Talented Mr. Ripley.