A snuff film, or snuff movie, is "a movie in a purported genre of movies in which a person is actually murdered or commits suicide". It may include a motion picture genre that depicts the actual murder of a person or people, without the aid of special effects, for the express purpose of financial exploitation, but that detail is extraneous, so long as it is "circulated amongst a jaded few for the purpose of entertainment". Some filmed records of executions and murders exist, but these were not staged for commercial purposes. The case of Australian paedophile Peter Scully revealed that he was selling films of himself torturing and raping children on the dark web, but these films did not show him murdering the victims.
The first known use of the term "snuff movie" is in a 1971 book by Ed Sanders, The Family: The Story of Charles Manson's Dune Buggy Attack Battalion. He alleges that The Manson Family was involved in making such a film in California to record their murders.
The noun "snuff" originally meant the part of a candle wick that has already burned; the verb "snuff" meant to cut this off, and by extension to extinguish or kill. The word has been used in this sense in English slang for hundreds of years. It was defined in 1874 as a "term very common among the lower orders of London, meaning to die from disease or accident".
According to Geoffrey O'Brien, "whether or not commercially distributed 'snuff' movies actually exist, the possibility of such movies is implicit in the stock B-movie motif of the mad artist killing his models, as in A Bucket of Blood [1959], Color Me Blood Red [1965], or Decoy for Terror [1967]" also known as Playgirl Killer.Michael Powell's film Peeping Tom (1960) featured a filmmaker who committed murders and used the acts as the content of his documentary films, although no real murders are seen in the film.