Janet Leigh is about to check into the Bates Motel again to take the screen's most famous shower, which turns into a bloodbath.

And thanks to the man behind the shower curtain, director Alfred Hitchcock, the scene should still produce chills when his 1960 spine-tingler "Psycho" returns to theaters Sept. 20 and Sept. 23. The movie is being presented nationally by Turner Classic Movies and Fathom Events, including at theaters in Farmingdale, Holtsville and Stony Brook (info and tickets at fathomevents.com).

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Accompanying the movie, which also stars Anthony Perkins, will be a filmed introduction by TCM host Ben Mankiewicz that will include "Psycho" back stories and trivia, such as these:

* Hitchcock's cameo occurs about eight minutes into the movie. He's shown wearing a Stetson outside of the bank where Leigh's character works.

* The "blood" in the shower scene was actually chocolate sauce.

* Danish-born Marli Renfro, who worked as a Playboy Bunny, served as Leigh's body double for the shower scene.

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* Hitchcock's daughter, Pat, appears as Leigh's co-worker. And look for a pre-"Mary Tyler Moore" show Ted Knight as a policeman in the final scene.