Neo-noir is a modern film genre that combines elements of classic film noir with more contemporary themes and techniques. It typically features dark, brooding characters and plots that explore moral ambiguity and the psychological effects of crime. The term 'neo-noir' was first used in 1984 to describe films such as Blade Runner and Body Heat. The term 'NEO' is an appropriate three-letter solution for this crossword, as it is an abbreviation for 'NEW, ' which is often used to describe the modernized aspects of neo-noir films.