Invisible Agent

In this 1942 American action and spy film, Jon Hall stars as Frank Griffin Jr, the grandson of the original Invisible Man, who uses his secret formula to spy on Nazi Germany. As he evades German troops and German espionage agents, including Peter Lorre and Sir Cedric Hardwicke, Griffin forms a bond with Maria Sorenson, played by Ilona Massey, who becomes entangled in a web of Axis double-agents and betrayal.