The ending of the movie is inspired by the ending of
Thomas Harris's book "Red Dragon". In an interview in
Luca M. Palmerini's book "Spaghetti Nightmares",
Dario Argento states that he did not like
Michael Mann's
Manhunter (1986), the first film adaptation of "Red Dragon" which used a completely different ending from the one in the novel, but is a fan of Harris's novel. (
Ted Tally's screenplay for
Red Dragon (2002) later adapted this ending more faithfully.)
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