Two young hoodlums (including a young Martin Sheen) terrorize the passengers of a late night New York City subway train.

The story concerns Dr James Xavier, ably portrayed by Ray Milland. He has invented a serum for improving human vision. When his funding is cut he proceeds to experiment on himself — with horrifying results. From the director who gave you Swamp Women, The Wasp Woman, and The Beast with a Million Eyes!