The Sealed Flask
Written by
R. T. M. Scott
Copyright 1923
Published as The Menace in Midnight Mystery Stories, January 13 1923, then in Hutchingson's Mystery Stories Magazine, March 1923, and as The Sealed Flask in Best Stories, September 1927. Reprinted in the collection .
The matter of a valuable missing flask first intrigues Sir Oliver but then even more interesting is the fact that Smith is also missing! What happened to Smith and why is a sealed flask so interesting to several important people?