The Mystery of the Yellow Room is a classic locked room mystery featuring police detective Fredric Larsen and a young reporter Joseph Roulteabille. Roulteabille is an extraordinary man, strongly observant and gifted with a powerful logical, deductive talent he sets about resolving the mystery. A young woman is violently assaulted and left for dead in a room that has no windows and has been locked from the inside. When the door is broken open the only person in the room is the victim.