In Hitchcock's narrative economy, men can't see past the nose on their face. Women, on the other hand, have keen powers of observation. If not for an older governess, a nun, and a society dame in a monogrammed scarf, all would be lost. Margaret Lockwood gets stuck into political intrigue in a picture that made her an international star. Like her character, Iris Henderson, Margaret knew her own mind, and remained steadfast to her vision of dramatic arts during a long an illustrious career in film, theatre, and television.