My cigar case. I guess I left it in my overcoat back in the section.

5 seconds sound clip from the Double Indemnity movie soundboard.

You can hear this line at 00:55:13 in the DVD version of the movie.

Quote context

[...]

- I had a broken arm once.

- That darn cast itches something fierce, doesn't it? I thought I'd go crazy with mine.

- Palo Alto's a nice little town.

- You a Stanford man?

- I used to be.

- I'll bet you left something behind. I always do.

- My cigar case. I guess I left it in my overcoat back in the section.

- Would you care to roll yourself a cigarette, Mister...

- Dietrichson.

- No thanks, I really prefer a cigar. Maybe the porter could...

- Well, I could get your cigars for you. Be glad to.

- If it's not too much trouble.

[...]