Title: The Mysterious Mr Quin
Content:  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. The UK edition retailed at seven shillings and sixpence (7/6) and the US edition at $2.00. Each chapter or story involves a separate mystery that is solved through the interaction between the characters of Mr Satterthwaite, a socialite, and the eponymous Mr Quin who appears almost magically at the most opportune moments and disappears just as mysteriously. Satterthwaite is a small, observant man who is able to wrap up each mystery through the careful prodding and apposite questions of Quin, who serves as a catalyst each time the men meet.
Title: The Mysterious Mr Quin
Content: 1930, William Collins and Sons (London), 14 April 1930, Hardcover, 288 pp ; 1930, Dodd Mead and Company (New York), 1930, Hardcover, 290 pp ; c. 1930, Lawrence E. Spivak, Abridged edition, 126 pp ; 1943, Dodd Mead and Company, (as part of the Triple Threat along with Poirot Investigates and Partners in Crime), Hardcover ; 1950, Dell Books (New York), Paperback, (Dell number 570 [mapback]), 256 pp ; 1953, Penguin Books, Paperback, (Penguin number 931), 250 pp ; 1965, Fontana Books (Imprint of HarperCollins), Paperback, 255 pp ; 1973, Pan Books, Paperback, 256 pp; ISBN: 0-330-23457-9 ; 1977, Ulverscroft large-print 
Title: The Mysterious Mr Quin
Content:  Hardcover, 457 pp; ISBN: 0-85456-546-9 ; 1984, Berkley Books, Paperback, 246 pp; Berkley number 06795-5 ; 2010, HarperCollins; Facsimile edition, Hardcover: 288 pages; ISBN: 978-0-00-735464-1  Chapters from the book appeared in Agatha Christie's Crime Reader, published by Cleveland Publishing in 1944, along with other selections from Poirot Investigates and Partners in Crime. Actor Hugh Fraser was the reader of the unabridged recording of The Mysterious Mr Quin released in 2006 by BBC Audiobooks America (ISBN: 978-1572705296) and HarperCollins in 2005 (ISBN: 978-0007189717) and 2007 (ISBN: 978-0007212583). ISIS Audio Books released an unabridged recording in 1993 read by Geoffrey Matthews (ISBN: 978-1856956758).
Title: The Mysterious Mr Quin
Content:  The blurb of the first edition (which is carried on both the back of the dustjacket and opposite the title page) reads: "Mr Satterthwaite is a dried-up elderly little man who has never known romance or adventure himself. He is a looker-on at life. But he feels an increasing desire to play a part in the drama of other people – especially is he drawn to mysteries of unsolved crime. And here he has a helper – the mysterious Mr Quin – the man who appears from nowhere – who 'comes and goes' like the invisible Harlequin of old. Who is Mr Quin? No one knows, but he is one who 'speaks for the dead who cannot speak for themselves', and he is also a friend to lovers. Prompted by his mystic influence, Mr Satterthwaite plays a real part in life at last, and unravels mysteries that seem incapable of solution. In Mr Quin, Agatha Christie has created a character as fascinating as Hercule Poirot himself."
Title: The Mysterious Mr Quin
Content:  number 6 of Britannia and Eve magazine in October 1929. The story was illustrated by Steven Spurrier. The Coming of Mr Quin: March 1925 (Volume LXXXIV, Number 2) issue of Munsey's Magazine under the title Mr Quinn Passes By; the story was not illustrated. ; At the Bells and Motley: 17 July 1926 (Volume XVI, Number 6) issue of Flynn's Weekly with an uncredited illustration. ; The Soul of the Croupier: 13 November 1926 (Volume XIX, Number 5) issue of Flynn's Weekly with an uncredited illustration. ; The World's End: 20 November 1926 (Volume XIX, Number 6) issue of Flynn's Weekly with an uncredited 
Title: The Mysterious Mr Quin
Content: The Coming of Mr Quin: First published as The Passing of Mr Quin in issue 229 of the Grand Magazine in March 1924. ; The Shadow on the Glass: First published in issue 236 of the Grand Magazine in October 1924. ; The Sign in the Sky: First published under the slightly different title of A Sign in the Sky in issue 245 of the Grand Magazine in July 1925. ; At the Bells and Motley: First published as A Man of Magic in issue 249 of the Grand Magazine in November 1925. ; The Soul of the Croupier: First published in issue 237 of 
Title: The Mysterious Mr Quin
Content:  of Mr Quin. The sixth story in the sequence (and the first to be published) was At the Crossroads in issue 236 in December 1926. The story was published in the US in Flynn's Weekly in October 1926 (Volume XIX, Number 3). Retitled The Love Detectives, the story appeared in book form in the US in 1950 in Three Blind Mice and Other Stories and in the UK in Problem at Pollensa Bay and Other Stories in 1991. No UK magazine printing The Bird with the Broken Wing has yet been traced. A partial listing of the first US magazine publications is as follows:
Title: The Mysterious Mr Quin
Content:  The Times Literary Supplement review of 29 May 1930 failed to comment on the merits of the book, confining itself to summarising the relationship between Quin and Satterthwaite and concluding that the latter is helped "to solve old mysteries, sometimes to restore happiness to the unfortunate, and sometimes to see, if not avert, impending tragedy". The New York Times Book Review of 4 May 1930 started by saying, "To call the tales in this collection detective stories would be misleading. For all of them deal with mystery and some of them with crime, they are, nevertheless, more like fairy tales." The anonymous reviewer described Mr Satterthwaite and Mr Quin and their relationship to the stories and 
Title: The Mysterious Mr Quin
Content:  other, and then concluded, "The book offers a rare treat for the discriminating reader." In the Daily Express (25 April 1930), Harold Nicolson said, "Mr. Quinn and Mr. Satterthwaite are, to me, new characters, and I should like much more of them. Mrs. Christie always writes intelligently, and I enjoyed these stories as much as any she has written." Robert Barnard wrote: "An odd collection, with the whimsical-supernatural element strong, though not always unpleasing. There are some notably dreadful stories (Bird with the Broken Wing, Voice in the Dark) but the unusual number of erudite or cultural references bears witness to Christie's own opinion of these stories – they were aimed more 'up-market' than usual."
Title: The Mysterious Mr Quin
Content:  In Agatha Christie's Autobiography, she claims that Quin and Satterthwaite became two of her favourite characters. The latter appeared in the 1935 novel, Three Act Tragedy, and very briefly in the short story Dead Man's Mirror, a 1937 collection of four short stories. Outside of this collection, Quin appeared in two further short stories: The Harlequin Tea Set and The Love Detectives, which were both included in the 1992 UK collection Problem at Pollensa Bay. In the US, the former story appeared as the title story in the 1997 collection The Harlequin Tea Set and the latter in the earlier 1950 collection Three Blind Mice and Other Stories. The Love Detectives, The Harlequin Tea Set, Three Act Tragedy (a Poirot story in which Satterthwaite makes an appearance) and Dead Man's Mirror were included in the collection The Complete Quin and Satterthwaite: Love Detectives (UK, HarperCollins; ISBN: 978-0-00-717115-6).

Question: Who is the author of The Mysterious Mr Quin?
Answer: Agatha Christie.
Agatha Mary Clarissa Christie.
Agatha Mary Clarissa Miller.
Mary Westmacott.
Agatha Mary Clarissa Mallowan.