If you like Saki, you would like John Collier too. His collection of stories published as
Fancies and Goodnights shows him to be one of the great short story writers.
Evening Primrose is his best known story. It won both an International Fantasy Award and an Edgar Award in 1952.
http://www.amazon.com/Fancies-Goodni.../dp/1590170512
Click on "I'd like to read this on a Kindle" while you are there.