Harley Quin is a fictional character created by <a href="/c/books/credit/25666/agatha-christie/">Agatha Christie</a> 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 <a href="/c/books/book/415508/the-mysterious-mr-quin/">The Mysterious Mr Quin</a> (1930), and in an additional two short stories, "<a href="https://www.bookogs.com/work/467775-the-love-detectives">The Love Detectives</a>" collected in <a href="/c/books/book/444709/three-blind-mice-and-other-stories/">Three Blind Mice and Other Stories</a> (1950) and <a href="/c/books/book/415428/problem-at-pollensa-bay-and-other-stories/">Problem at Pollensa Bay and Other Stories</a> (1991), and "<a href="https://www.bookogs.com/work/467780-the-harlequin-tea-set-2">The Harlequin Tea Set</a>" collected in <a href="/c/books/book/415428/problem-at-pollensa-bay-and-other-stories/">Problem at Pollensa Bay and Other Stories</a> (1991) and <a href="/c/books/book/467781/the-harlequin-tea-set-and-other-stories/">The Harlequin Tea Set and Other Stories</a> (1997).
