William Harrigan

Working in Dr. Cranley’s laboratory, scientist Jack Griffin was always given the latitude to conduct some of his own experiments. His sudden departure, however, has Cranley’s daughter Flora worried about him. Griffin has taken a room at the nearby Lion’s Head Inn, hoping to reverse an experiment he conducted on himself that made him invisible. But the experimental drug has also warped his mind, making him aggressive and dangerous. He’s prepared to do whatever it takes to restore his appearance.

James “Brick” Davis, a struggling attorney, owes his education to a mobster, but always has refused to get involved with the underworld. When a friend of his is gunned down by a notorious criminal, Brick decides to abandon the exercise of the law and join the Department of Justice to capture the murderer.

Major Daniel Kirby takes command of a squadron of Marine fliers just before they are about to go into combat. While the men are well meaning, he finds them undisciplined and prone to always finding excuses to do what is easy rather than what is necessary. The root of the problem is the second in command, Capt. Carl 'Griff' Griffin. Griff is the best flier in the group but Kirby finds him a poor commander who is not prepared to the difficult decision that all commanders have to make - to put men in harm's way knowing that they may be killed.