Proof Positive

CIA Poison Dart Gun: How the Undetectable Heart Attack Weapon Actually Worked

Published: July 27, 2026

Duration: 10:01

What if the CIA had a gun that could kill someone and make it look like a natural heart attack? In 1975, Daniel Torres reveals, Congress discovered exactly that weapon - and it's way scarier than anything you've seen in spy movies. On Proof Positive, we break down the CIA's most terrifying Cold War creation: a silent dart gun that fired frozen poison darts up to 100 meters with deadly accuracy. You'll learn how this undetectable weapon actually worked, why the poison dart froze at -100 degrees and melted within 10 seconds of impact, and how millions of shocked Americans watched Congress expose...