He wasn't leaving anything to chance.
2 seconds sound clip from the The Invisible Man (1933) movie soundboard.
You can hear this line at 00:21:10.027 in the Blu-ray version of the movie.
Quote context
[...]
- He won't believe me. You tell him.
- Mr. Hall speaking. The constable's telling the truth, all right.
- Invisible man special! Horrible murder in Iping! Invisible man...
- I didn't expect there would be.
- He wasn't leaving anything to chance.
- Griffin was never the man for secrets. He came to me with everything.
- He kept a lot of stuff locked in here.
- I came in one evening when he wasn't expecting me.
- He was standing here by this cupboard. It was full of instruments.
- When he saw me, he slammed the door and turned the key.
[...]