A team of scientists, led by visionary Janos Rukh, embark on an expedition to Africa to study a significant ancient meteorite. When Rukh touches the meteorite, he's exposed to toxic radiation, but an antidote saves him. However, his touch becomes deadly to others. Back in London, the controlled radiation of the meteorite offers a chance to restore eyesight to the blind.

The Invisible Ray
A scientist's groundbreaking quest for Radium X ends in devastating outcome as he becomes trapped in a deadly cycle of radiation poisoning.