an Entity references as follows:
The Regatta Mystery and Other Stories is a short story collection written by Agatha Christie and first published in the US by Dodd, Mead and Company in 1939. The first edition retailed at $2.00. The stories feature, with one exception ("In a Glass Darkly"), Hercule Poirot, Miss Marple or Parker Pyne, Christie's detectives. The collection was not published in the UK and was the first time a Christie book was published in the US without a comparable publication in the UK; however all of the stories in the collection were published in later UK collections (see UK book appearances of stories below).