Dune1984

Dr. Wellington Yueh:
I sabotaged the house generators. We are wide open! I've destroyed the new army's weirding modules. I've brought House Atreides down.

Duke Leto Atreides:
Why?

Yueh:
I wish to kill a man. Not you, my dear Duke. You are already dead. But you will get close to the Baron before you die. You will be tied and drugged, but you can still attack. You can still attack! When you see the Baron, you will have a new poison gas tooth. He'll want you close so he can gloat over you. One bite on this tooth, and a strong exhale...

Leto:
Refuse...

Yueh:
No! You mustn't! Because in return, I'll save the lives of your Paul and Jessica. (Yueh removes the Ducal signet ring from his finger) For Paul. (Yueh then takes out the Duke's organic tooth and replaces it with a poison gas capsule in his tooth) When you see the Baron, remember the tooth, the tooth, (echo) the tooth.