The Danger Zone

Published in Argosy Weekly, October 15, 1932, then in 2 issues of The Saint Mystery Magazine (US - Dec. 1963 & UK - Feb. 1964). Also published in 4 anthologies as follows: Great Spy Novels And Stories (1965), 13 Short Espionage Novels (1985), The Mammoth Book of Short Spy Novels (1986) and The Danger Zone and Other Stories.
Major Copely Brane is 'hired' by a very rich elderly Chinese man to find and rescue a young woman, Jee Kit King, who has been taken by "enemies of China". She has been kidnapped to get her to reveal what she did with some highly valued "evidence" against yet another very powerful man of Canton, all concerned with the nascent war with Japan.