Wait for him downstairs and kill him.
2 seconds sound clip from the The Old Dark House (1932) movie soundboard.
You can hear this line at 00:54:21.383 in the DVD version of the movie.
Quote context
[...]
- Saul is why we have to keep Morgan.
- But isn't he safely locked in?
- Yes, but you see, if Morgan is bad, I think he might open the door.
- Philip, what if he's come to?
- Wait here, I'll go down and look at him.
- He's gone upstairs. I heard him. He's gone to let Saul out.
- Wait for him downstairs and kill him.
- What are we to do? Can't we stay in here?
- No supposing he set fire to the place. Come on.
- But, what about Sir Roderick?
- Sir Roderick, I'm going to lock you in.
[...]