Poirot And Hastings Are Entertaining Japp After They Had All Attended A Magic Show When The Conversation Turns To The Recent Disappearance Of A Banker, Mr. Davenheim, From His Large Country House, The Cedars. Boasting, Poirot Makes A Five Pound Bet With Japp That He Could Solve The Case Within A Week Without Moving From His Chair. The Facts Of The Case Are That Davenheim Arrived Home From The City At Midday On Saturday. He Seemed Normal And Went Out To Post Some Letters Late In The Afternoon Saying That He Was Expecting A Business Visitor, A Mr. Lowen, Who Should Be Shown Into The Study To Wait His Return. Mr. Davenheim Never Did Return And No Trace Of Him Can Be Found.