A Fairy in the Flat
First published as the 1st part of Publicity in the September 24th 1924 issue of The Sketch and then in the February 1928 issue of Hutchinson's Adventure & Mystery Story Magazine.
"Following WWI Tommy and Tuppence are seeking some adventure. Luckily they’re soon offered a position covering Blunt’s Detective Agency, Tommy taking on the role of Mr Blunt, Tuppence as his secretary."
1st story in the collection .