"[to Louis] If you ever get hungry, our garden back home is full of snails. We tried everything to get rid of them. We…"

"Sorry we were gone so long, but we had to pick up Hank!"

"[dying] A man... a statesman... is to be killed... assassinated in London. Soon... very soon. Tell them in London... …"

"[to Drayton] You have muddled everything from the start, taking that child with you from Marrakesh. Don't you realize…"

"A little knowledge can be a deadly thing!"

"Alfred Hitchcock strikes the highest note of suspense the screen has yet achieved!"

"James Stewart - Dr. Benjamin McKenna"

"Doris Day - Josephine Conway McKenna"

"Brenda De Banzie - Lucy Drayton"

"Bernard Miles - Edward Drayton"