
cover art attributed to Karl Milray or Carl Hulings
better image than previously posted

published in 1949 by Collins in London and Doubleday in NYC
born in Rangoon, Morna Doris Brown wrote as Elizabeth Ferrars in England but the US publishers changed it to E.X. Ferrars.
cover art by Frank Smith
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1952 Lippencott hardcover, this the later Pocket softcover reissue
1st of three novels with Steve Considine
cover art by James Meese
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cover art by Verne Tossey

cover art by Larry Newquist
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cover art by Sheldon

1959 from the Detective Book Club, this the 1960 Pocket paperback reissue
cover art by Robert Abbett

pseudonym of Hugh Callingham Wheeler, who also wrote as Q.Patrick and Jonathan Stagge, and collaborated with Richard Wilson Webb under all three names.
4th in his series with Peter Duluth series, originally published by Simon & Schuster in 1945 as Puzzle for Wantons. This is the 1948 Pocket edition, re-titled.
cover art by Roswell Keller
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1950 Morrow hardcover, this the later 1951 Pocket reprint
cover art by Ray App
his 5th novel
better image than previously posted