- One of us must have killed him.
- I didn't do it.

4 seconds sound clip from the Clue (1985) movie soundboard.

You can hear this line at 00:28:38.767 in the Blu-ray version of the movie.

Quote context

[...]

- Is he alive?

- Mr. Boddy!

- Stand back! Give him air! Let me see.

- He's dead!

- Who had the gun?

- I did.

- Then you shot him!

- I didn't!

- Well, you had the gun. If you didn't shoot him, who did?

- Nobody! Look. There's no gunshot wound.

- Somebody tried to grab the gun from me in the dark and the gun went off. Look! The bullet broke that vase on the mantle.

- He's absolutely right. Look, there's a bullet hole here in the wall. See that?

- How did he die?

- I don't know! I'm not a forensic expert!

- One of us must have killed him.

- I didn't do it.

- I need a drink.

- Maybe he was poisoned.

(Mrs. Peacock screams) (2)

- Mrs. Peacock, it's all right. We don't know anything. Sit down. Sit down.

[...]