Wes Craven claimed to have drawn inspiration for this movie from 3 separate incidents involving young Cambodians, survivors of
Pol Pot's genocidal "purges," all of whom died while apparently in the throes of a horrific nightmare. The story goes that first these young, otherwise healthy people would have a horrible nightmare, then refuse to sleep for as long as possible; when they finally fell asleep from sheer exhaustion they awoke with screaming and writhing, then died from a heart attack. In the last incident, the young man used a variety methods to try and stay awake that were incorporated into the film, including a hidden coffee pot. Some of the dialog between Nancy and her parents is based on this young man's attempts to convince his unbelieving parents that going to sleep would kill him.
more
