Believe it or not, Harry, I'm doing it for your own good.
4 seconds sound clip from the Beat the Devil (1953) movie soundboard.
You can hear this line at 01:11:05 in the Blu-ray version of the movie.
Quote context
[...]
- Captain, it grieves me to confess this, but in point of fact, my husband has an illness of the mind.
- The medical word for it is paranoia.
- On occasion, he displays homicidal tendencies.
- For heaven's sake, woman! What's the meaning of this treachery?
- Believe it or not, Harry, I'm doing it for your own good.
- He knows! He saved my life. He'll tell the truth.
- I wouldn't contradict the lady.
- You wrecked my ship! You tried to kill the passengers!
- But I'm the only sane person on this ship! It's my word against his!
- Let me go! I'll kill all of you! I warn you, Captain!
[...]