The Mysterious Mr Quin is a short story collection by British writer Agatha Christie, first published in the UK by William Collins & Sons on 14 April 1930 and in the US by Dodd, Mead and Company later in the same year. Each chapter or story involves a separate mystery that is solved through the interaction between the characters of Mr Satterthwaite, a socialite, and Mr Harley Quin who appears almost magically at the most opportune moments and disappears just as mysteriously.
• "The Coming of Mr Quin" - first published under the title "The Passing of Mr Quin" in Grand Magazine, March 1924
• "The Shadow on the Glass" - first published in Grand Magazine, October 1924
• "At the "Bells and Motley"" - first published under the title "A Man of Magic" in Grand Magazine, November 1925
• "The Sign in the Sky" - first published under the title "A Sign in the Sky" in Grand Magazine, July 1925
• "The Soul of the Croupier" - first published in Flynn's Weekly, 13 November 1926
• "The Man from the Sea" - first published in Britannia and Eve, October 1929
• "The Voice in the Dark" - first published in Flynn's Weekly, 4 December 1926
• "The Face of Helen" - first published in The Story-Teller, April 1927
• "The Dead Harlequin" - first published in Grand Magazine, March 1929
• "The Bird with the Broken Wing"
• "The World's End" - first published in Flynn's Weekly, 20 November 1926
• "Harlequin's Lane" - first published in The Story-Teller, May 1927
