Margot (Kelly) is having an affair on her husband Tony (Milland).

But Tony already knows about it. Terrified she'll leave him, he decides he wants her dead instead.

So he hires a hitman to do the nasty deed. But feisty Margot survives the attack and kills the murderer in self-defense! Tony must think fast (very fast).

How can he make sure he's not implicated in the murder attempt on Margo?

He devises a plan whereby it appears Margot deliberately murdered the hitman.

The mega beautiful Kelly gives a knockout performance here in the first of her three Hitchcock films (the others being the classic Rear Window in 1954 and To Catch A Thief in 1955).

Milland has never been better than here, and he truly dominates the proceedings with his exquisite portrayal of the quick-thinking, intelligent and utterly villainous Tony (indeed, this may be his finest hour).

And there's that wonderful, iconic Hitchcock shot during Margo's assault, of her reaching out towards the audience...for the scissors that will be her salvation.

A classic must see.