Oh, don't worry about it, sir. Sooner or later, he's gonna get stopped by the oldest snag of all... human error.
8 seconds sound clip from the The Abominable Dr. Phibes movie soundboard.
You can hear this line at 01:07:05 in the Blu-ray version of the movie.
Quote context
[...]
- Do you remember assisting me in an operation four years ago?
- Yes.
- Kill me?
- I don't know how you expect me to sleep with all this going on, Doctor.
- I suggest you take a sleeping pill. Good night.
- There is one aspect of this situation we have not yet explored.
- Oh, human error won't stop him.
- He's had years to hide, to plot this damnable thing.
- He's compelling himself to follow exactly the classic death pattern of the G'Tach.
[...]