Sergeant Cuff is a fictional detective character from the novel "The Moonstone," written by Wilkie Collins in 1868. He is known for his keen observational skills and methodical approach to solving mysteries. Cuff is often seen as a precursor to later detective characters in literature, showcasing the importance of logic and deduction in criminal investigations. In the story, Cuff is called to investigate the theft of a valuable diamond, the Moonstone. His character represents the emerging detective archetype of the Victorian era, emphasizing the role of forensic evidence and careful reasoning in uncovering the truth behind crimes.