R | | Horror, Mystery, Thriller
A Phoenix secretary embezzles forty thousand dollars from her employer's client, goes on the run, and checks into a remote motel run by a young man under the domination of his mother.
An early script had the following dialogue: Marion: "I'm going to spend the weekend in bed." Texas oilman: "Bed? Only playground that beats Las Vegas." (This discarded dialogue was resurrected for the Gus Van Sant remake Psycho (1998), but was subsequently cut.)
Bob! Run out and get yourself some lunch, will you?
Bob Summerfield: Oh, that's okay, Sam, I brought it with me.
Sam Loomis: Run out and eat it!
When Norman places the folded up newspaper containing the money in the car trunk it is noticeably thinner than when he picked it up off the night stand.
Opening credits prologue: PHOENIX, ARIZONA
FRIDAY, DECEMBER THE ELEVENTH
TWO FORTY-THREE P.M.
Hitchcock hesitated in editing a superimposition of Norman and Mother's skull in the closing shot. Eventually only some copies featured the trick by then.