Stay with him, work with him, watch him, and when you find out his weak moment, strike!
7 seconds sound clip from the Mr. Topaze (1961) movie soundboard.
You can hear this line at 01:11:09 in the Blu-ray version of the movie.
Quote context
[...]
- But I'm scared. I'm a woman at the mercy of a dangerous man.
- What else can I do but seek help?
- Because the moment I saw you, I was struck by your manly face. I thought you could protect me.
- You're the only one who can outwit him.
- Stay with him, work with him, watch him, and when you find out his weak moment, strike!
- I will strike, madam, I will strike.
- Oh yes, but not yet, please.
- Be very friendly with him, and stay close to me.
[...]