""That Affair At The Cedars"" is a mystery novel written by Lee Thayer and first published in 1921. The story revolves around the mysterious death of Arnold Armstrong, the son of a wealthy family who is found dead in his bedroom at the family's estate, The Cedars. The murder weapon is found in the room, and suspicion falls on the other members of the household, including Arnold's stepmother, his fianc�����e, and...