I give you my word. It'll be a first class burial.
4 seconds sound clip from the Mr. Topaze (1961) movie soundboard.
You can hear this line at 01:18:12 in the Blu-ray version of the movie.
Quote context
[...]
- Think, sir. Honour is our most precious attribute and worth every sacrifice.
- Come now, can't you guess what you must do?
- Sir, I hardly dare put a meaning to your words.
- And you honestly mean that if I did that, this edition would not appear?
- I give you my word. It'll be a first class burial.
- Come, sir, make an effort. Kill yourself.
- Now?
- Certainly. The sooner the better.
- Yes, of course, in front of me.
[...]