CIA Secret Weapon
In 1975, during the Church Committee hearings, the existence of a secret assassination weapon came to light. The CIA had developed a poison that was supposed to cause the victim to have an immediate heart attack. This poison could be frozen in the shape of a dart and then fired at high speed from a pistol. The gun was capable of shooting the icy projectile with enough speed that the dart would go right through the clothes of the target and leave just a tiny red mark. Once in the body the poison would melt and be absorbed into the blood. Instant heart attack! The poison had been developed to be undetectable by modern autopsy procedures.
In this video you can watch some of the testimony regarding the weapon.


