Whoever killed Mr. Boddy also wanted his accomplices dead.
4 seconds sound clip from the Clue (1985) movie soundboard.
You can hear this line at 01:17:07.048 in the Blu-ray version of the movie.
Quote context
[...]
- And the singing telegram girl?
- Well, let's put her in the study with the others.
- So, now you all know why they died.
- Whoever killed Mr. Boddy also wanted his accomplices dead.
- How did the murderer know about them all?
- I mean I admit that I'd guessed that this young singer informed on me to Mr. Boddy.
- But I didn't know anything about any of you until this evening.
- First, the murderer needed to get the weapons. Easy. He stole the key from my pocket.
[...]