Dr. Gideon Fell is a fictional detective created by British author John Dickson Carr. He is known for his impressive intellect and distinctive appearance, often depicted as a large man with a fondness for wearing a bowler hat. Dr. Fell is characterized by his keen analytical skills and his ability to solve complex mysteries, often involving locked-room scenarios. The character first appeared in the 1933 novel The Hollow Man, which is considered one of Carr's best works. Dr. Fell is a classic example of the "armchair detective," using his knowledge and reasoning to unravel intricate plots, making him a significant figure in the genre of detective fiction.