Valiant #13 October 1962 [2]

In "null," Louis Crandell, a scientist assistant to Professor Barringer, becomes invisible after a laboratory accident—leaving only his steel prosthetic hand visible in the air. As his mind unravels, he descends into madness, turning to crime in England before fleeing to New York, where he threatens the city with a bomb. His path leads him into the criminal underworld, where a confrontation with a gangster forces him to confront the truth about himself.