First edition, Collins, 1941.
Edwy Searles Brooks was a UK novelist who wrote under a number of pseudonyms including Berkeley Gray and Victor Gunn. This is a rare work from his canon.
From the library of Anthony Lejeune.
Rare crime title, all other copies I have seen of this title are described as ‘7th Thousand’. London, Skeffington, [1930 according to COPAC] Reasonable to assume this was a publisher gimmick to show titles were popular.