Alfred Hitchcock directed more than fifty features across silent, British and Hollywood periods, and his working method was so deliberate that he claimed to find the actual shooting boring. He storyboarded exhaustively, planned every cut, and treated the set as execution instead of discovery. Whether that is literally true matters less than what it produced, which is a body of work where the geometry of a scene carries the tension and not the dialogue.
His central technical argument was about the difference between surprise and suspense. A bomb that explodes without warning buys fifteen seconds of shock. A bomb the audience knows about under a table where two people are talking about nothing buys ten minutes of agony. Almost every famous sequence he made is a version of that principle: the audience is given information the character lacks and then made to wait.
The recurring preoccupations are less comfortable than the showman reputation allows. Cool blonde women subjected to sustained cruelty, men falsely accused, mothers who ruin their sons, and a persistent interest in voyeurism that Rear Window makes explicit and Psycho makes literal. Accounts of his treatment of Tippi Hedren in particular have complicated his standing considerably, and any honest assessment has to hold the films and that conduct at the same time.
He never won a competitive Academy Award for directing despite five nominations. Psycho, Vertigo, Rear Window and North by Northwest have all been repeatedly named among the greatest films made, and Vertigo displaced Citizen Kane at the top of the Sight and Sound poll in 2012. For writers the enduring lesson is the bomb under the table: information given to the audience early is worth more than information withheld for a reveal.