I thought you said you knew your business.

2 seconds sound clip from the Criss Cross (1949) movie soundboard.

You can hear this line at 00:57:59.451 in the DVD version of the movie.

Quote context

[...]

(TRAM BELL CLANGING)

- Who's your chemical man?

- What's your experience?

- I know my stuff.

- Can you get what's needed?

- I can put my hands on it.

- You sure?

- He makes it. He's a registered druggist.

- Was.

- What's that? I can't read it.

- SiCl4.

- I thought you said you knew your business.

- Thompson, you looking for something?

- Ran out of cigarettes.

- Here. Take my pack.

- Thanks.

- Who's your getaway man?

- I got a Ferrari motor in my job. I can take anything out.

[...]