Dead Man's Building - Agatha Christie

Sir Steps and his wife, Lady, are having a party on their estates...a different kind of celebration. Ariadne Oliver, acclaimed writer of detective stories, will host the main event of the celebration: the hunt for the criminal. And she has arranged all the details with her usual genius... The scene is set for the crime!

But Oliver Ariadne is uncomfortable; Something isn't right. I wish she knew what that thing was. She calls her old friend, Hercule Poirot, for help...