On a dark evening, Mr. Harley Quin appears at the door of Royston Hall under the premise that his car has broken down. Once inside, he embarks upon the tragic tale of Royston Hall's former occupants, leading to a dramatic change in the perceptions of the current inhabitants - but has Mr. Quin's revelation come too late?
December 2012 : USA Audio edition
Title: The Coming of Mr. Quin: A Harley Quin Short Story
Author(s): Agatha Christie
May 2012 : USA, Canada Kindle edition