Beong-soo Kim (김병수), often romanized as Byung-soo Kim, is a prominent South Korean author known for his psychological thrillers and crime novels. His works frequently delve into the complexities of the human mind, exploring themes of memory, identity, and the darker aspects of human nature. He gained widespread recognition with his novel "Memoir of a Murderer" (살인자의 기억법), which was later adapted into a successful film. Kim's writing style is characterized by its suspenseful pacing, intricate plots, and morally ambiguous characters, establishing him as a leading figure in contemporary Korean literature.