You killed the watchman.
3 seconds sound clip from the The Roaring Twenties (1939) movie soundboard.
You can hear this line at 01:13:36 in the DVD version of the movie.
Quote context
[...]
- I'm not drawing up any more contracts for you.
- What's the matter? The shooting give you the jitters too?
- You stuck up that warehouse tonight, didn't you?
- You have good ears, don't you?
- You're getting excited over nothing. Come on, let's sit down, talk this thing over.
- No, it won't work. This is where I draw the line. I said I'm through, and I mean it.
[...]