The Invisible Ray

Dr. Janos Rukh discovers a certain type of radium that has almost magical healing properties. But the element has a dangerous side, too, and it has already started affecting Rukh. Consumed by paranoia, he begins to suspect that his wife is having an affair. Wild for revenge, Rukh hatches a deadly plot...using his own poisoned body as a weapon to kill.

• telescope
• paris, france
• love triangle
• africa
• insanity
• meteor
• radium
• revenge
• laboratory
• scientist
• fake death
• dead dog
• killing a dog
• regaining sight