Fightin' Five #39

After four frantic days tracking the Reds, the Fightin' Five storm a nuclear submarine in shallow water to confront Zeru, the diabolical genius behind a plot to destroy the free world—only to discover his schemes are already crumbling around him. But capturing the Red mastermind proves to be just the beginning of their troubles: a lethal fog engineered by Zeru himself breaks him free from a maximum-security base in the Everglades, and Frenchy the Fox must follow him into dangerous waters to uncover his true endgame. With the team separated and facing enemies at every turn, can they stop Zeru before he executes his final, devastating move?

When Dr. Crossen and Lt. Col. Wade venture into an ancient underground cave to monitor a nuclear test in the American Southwest, they discover something far more unsettling than radiation—strange sounds and an unknown presence that no living creature should inhabit. As they race to understand what stalks them in the darkness, a second phase of the experiment triggers, sealing away both their mystery and any answers for years to come.