- One of these days what?
- Nothing.
- Exactly. Nothing.

11 seconds sound clip from the The Comedy of Terrors movie soundboard.

You can hear this line at 00:14:10 in the Blu-ray version of the movie.

Quote context

[...]

- Mr Gillie... Felix... Friend...

- I put it to you, who, in your discerning estimation, do you think they're most likely to believe?

- Mr W. Trumbull, respected citizen and entrepreneur of death, or Mr Felix Gillie, wanted fugitive and confessed bank robber?

- I've never confessed! They just proved it.

- One of these days... One of these days, I...

- One of these days what?

- Nothing.

- Exactly. Nothing.

- Shall we say, er... midnight?

- Midnight it is. All right.

- You are most accommodating. Until midnight, then.

- He's a perfectly delightful old gentleman. Owns a fleet of merchant vessels operating out of Boston.

- He and I enjoyed a most delightful afternoon of conversation together at the White Bull Tavern. Later on, I walked him home.

[...]