In the 70's there was a movie about a very fine, white, powder, that if blown on an enemy, could make him appear to be dead. There'd be no sound of a heart beating, no sign of him breathing, and he'd be frozen (paralyzed) unable to move. In actuality, he is "very much alive" and totally aware of his surroundings. The content of this movie involved some sort of substance that was ritualistic in voodoo or, originated in Africa, but it was supposedly based on facts. After a certain amount of time lapsed, the victim, who was obviously someones enemy, would return to normal, regaining all body functions, and end up in the highest-ever state of fear, in knowing, that absolutely no one could hear him scream from six feet underground. I've racked my brain 3 days trying to remember the title, to no avail. Please help if you can!!! Thanks!