Pacing, script, acting and the Bernard Herrmann score are all spot on. One of my top three Hitchcock films (Psycho and Vertigo being no2 and no1) this was heavily rejected by critics because of its psychological pretensions. However the psychology is quite well done with Tippi Hedren's role that of a disassociated woman very well crafted. Her personailty and cool character perfect for the part. Connery does well against type in a role coming very soon after his first Bond film.
Hitch goes more psychological here as a story of the effects of childhood sexual abuse slowly unravel. Some great set pieces and interesting use of rear projection in the horse riding scene. It all adds up wonderfully and Hitchcock bravely put this on the screen when it was taboo to do so. Tippy Hedren is Melanie Griffiths mother in non movie life.