Harley Quin is a fictional character created by Agatha Christie and the most mysterious of all her detectives. His name is a word play on "Harlequin" which may be a clue to his personality. Mr. Quin helps his older friend Mr. Satterthwaite solve crimes using his extraordinary skills and instincts. He appears in the 12 short stories appearing in The Mysterious Mr Quin, first published in 1930, and in an additional two short stories, The Love Detectives and The Harlequin Tea Set from Problem at Pollensa Bay and Other Stories. Mr. Quin's emissary Mr. Satterthwaite, who appears together with him in all the previously mentioned short stories, also appears without him in Christie's short story Dead Man's Mirror, and in her novel Three-Act Tragedy.

Harley Quin
First appearanceThe Mysterious Mr Quin
Created byAgatha Christie

In her autobiography, Agatha Christie wrote that Mr. Quin and Mr. Satterthwaite (whom she called Quin's emissary) became her favourite characters.[1] The reason was that she did not exploit them as much - she refused to make series of books about them, writing only when she felt like it. Here is how she described the protagonist: "Mr Quin was a figure who just entered into a story - a catalyst, no more - his mere presence affected human beings. There would be some little fact, some apparently irrelevant phrase, to point him out for what he was : a man shown in a harlequin-coloured light that fell on him through a glass window; a sudden appearance or disappearance."[1]


  1. ^ a b Agatha Christie (2001). An Autobiography. HarperCollins. ISBN 978-0-00-635328-7. p.447

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