[1] The stories feature, with one exception ("In a Glass Darkly"), Hercule Poirot, Miss Marple or Parker Pyne, Christie's detectives.

In "Yellow Iris", Poirot follows an anonymous phone call to a restaurant table laden with the favourite flower of a woman who died mysteriously four years before.

"Miss Marple Tells a Story" is written in the first person by the elderly sleuth, who recalls solving (without leaving her own chair) a seemingly impossible murder.

"In a Glass Darkly" is the only story in the collection not to feature one of Christie's detectives (it is told by an anonymous narrator), and the only one to invoke the supernatural.

"[2] An unnamed reviewer in the Toronto Daily Star (30 June 1939) wrote, regarding the title story "The Regatta Mystery", that "Agatha Christie succeeds in baffling her readers ... [B]ut far from plausible is her solution", and went on generally to say, "The author is handicapped by attempting to compress her plots into 27-odd pages each.

It surfaced again in 2008 as part of the three-volume Harper collection, Agatha Christie: The Complete Short Stories – Masterpieces in Miniature.