You're insane... hopelessly insane. The whole idea is mad, too utterly ridiculous for words.
8 seconds sound clip from the The Doctor Prescribed Death (Suspense) classic radio play.
You can hear this line at 00:13:50 in the radio play.
Quote context
[...]
- There may be a dozen murders tonight
- But you'll know which one I mean, you'll know about this murder.
- I'm going to tell you who the victim is going to be.
- If you know who the intended victim is, why don't you stop it?
- You're insane... hopelessly insane. The whole idea is mad, too utterly ridiculous for words.
- I'm thinking about the victim... and he learned.
- Me?
- Who is this girl? I know no girl who'd want to kill me.
[...]