Notorious: various stills, 1
page 2

Hitchcock's cameo

The crane shot & the first MacGuffin

The scaffold built for the shot
a the shot begins with the widest view of the party
b
c d the camera gradually finds and moves in on the key object

e f the shot ends with the key

Opening and introduction of Alicia
Introduction of Devlin

various Notorious stills, page 2