""The Body In The Blue Room"" is a mystery novel written by Sidney Williams and first published in 1922. The story takes place in a luxurious mansion where a wealthy businessman, Mr. John Lester, has been found dead in his bedroom. The police are called in to investigate the murder and they soon discover that the room in which Mr. Lester was found is locked from the inside, leaving no apparent way for the killer to have entered or escaped.The investigation...