The Adventure of the Cardboard Box by Arthur Conan Doyle The Adventure of the Cardboard Box is a short story penned by Arthur Conan Doyle. It is written in a straightforward tone and most of the mystery unfolds during the time of its investigation. The plot of mystery in this story is mainly depicted in the narrative of thinking that Detective Sherlock Holmes presents when he encountered the clues. It is only the description of his thought process in which most of the mystery is shown to be solved in the story. The story goes something like this. A retired woman named Mrs. Susan Cushing, who lives in Croydon, receives a parcel containing a yellow cardboard box packed in brown paper. Inside the box are two raw ears freshly cut off from two human bodies, lying inside a mound of coarse salt. The parcel was sent from the city of Belfast, yet its owner remains uncovered by the authorities. The case goes under the investigation of Inspector Lestrade of Scotland Yard who...