According to Donald Spoto in "The Dark Side of Genius", Hitchcock's wife, Alma Reville, spotted a blooper in one of the last screenings of "Psycho" before its official release: after Marion was supposedly dead, one could see her blink. According to Patricia Hitchcock, talking in Laurent Bouzereau's "making of" documentary, Alma spotted that Leigh's character appeared to take a breath. In either case, the postmortem activity was edited out and was never seen by audiences. Although Marion's eyes should be dilated after her death, the contact lenses necessary for this effect would have required six weeks of acclimation to wear them, so Hitchcock decided to forgo them.