a slasher movie is a horror or thriller movie in which there is a killer hunting after a group of people, picking them off one by one. often the killer has a powerful weapon, is crazy or insane, and is either unstoppable or cannot die. common examples of slashers include: a nightmare on elm street, friday the 13th (1980 movie), halloween (franchise) and psycho (movie). stephen king has written several slasher movies.