Hawkman notices that a man is being attacked near a bog, and he alights and dispatches the thugs, then takes off for the home of Harlan Walsh, steel baron, not realizing the man he saved has news about the Monster. Meanwhile, the Monster threatens Walsh to rebuff the Feathered Fury when he arrives...or else! Hawkman leaves and is approached by the man he saved....the twin of the man inside, who is really Marvin Walsh, the black sheep of the family, and in the employ of the Monster. Hawkman re-enters the home, captures Marvin, who then tells Hawkman where the Monster's gang hides out.; Spectre sees the Monster getting ready to blow up a building, quickly rescuing Walter Noonan, a friend of Jason Rogers, and tells Spectre how the Monster came to him demanding $50,000 or risk having a dam blown up that his company had built. Noonan is told to agree to the terms so that he can set a trap. But the Monster sets a trap of his own, and when he arrives for the payoff, it goes off without a hitch. To the Monster, that is good because he would have blown away Noonan at the first sign of the Spectre. However, on the way back to the hideout, the Monster somehow gets away.; The Monster, intending to rob an office payroll, lowers a magnet from his weird aircraft and attracts the safe from the of office. The Atom hops aboard the magnet being drawn back up to the strange ship to confront the crew. As the sky-craft lands on a roof, a net is thrown over the Atom, trapping him. The Monster shows up, but the Atom cowers in fear and faints! Upon awakening, the Monster puts him up against the wall to shoot him, when Atom throws a brick, hitting a lever and starting up the magnet, attracting the thug's guns. Atom mops them up, but the Monster escapes in his aircraft.; Dr. Mid-Nite awakens strapped to an operating table as the surgeon relates how the Monster had drugged the doctor, then called in to operate on an important Senator, who died on the table. He lost his license and hope until the Monster persuaded him to operate on the wealthy, disfigure their faces, then blackmail them to restore their looks. But he refuses to operate on Dr. Mid-Nite to drive him insane and cuts him loose. Then the Monster shoots Hill and leaves. The doctor tells Dr. Mid-Nite how to restore people's faces before he dies.; Starman arrives a millionaire Ira Young's estate knowing the Monster is due to strike there somehow. Jason Rogers happens to be there as a guest and is being shown the new planetarium when gas strikes down Rogers and friends, and thugs begin to pick the people's pockets. Starman dives right into action, and while he is busy bopping the bad guys, the Monster loots the unconscious victims and flees. Giving chase, the Astral Avenger is saved from being fried by artifical lightning by his gravity rod, saves the stolen money, but misses out on capturing the Monster.; As Johnny walks the streets, he noticed two Policemen laughing their heads off, and tell Johnny that the jewelry house is being robbed. Going inside, Johnny is overcome by the gas used on the Police and is taken to the Monster's hideout, where upon the Monster tells Johnny he is going to chop his head off. The Thunderbolt prevents that from happening and helps brother John to round up the gang. Thunderbolt takes on the Monster himself with little success and the Monster flees away into the night.; Jason L. Rogers attends the meeting of the JSA to tell them about a Monster who has been robbing his banks, dynamited his factories....even broken into his home. Rogers says that this fiend has been giving him problems ever since a picnic years back, shot on film, and when that film was shown, his wife passed out from the shock. Later, Rogers was left plans for more schemes by the Monster and has now brought them to the meeting for the members to deal with. After they leave, the Monster suddenly appears and taunts the JSA, threatening to drive Roger's mind from his body.; The JSA returns to Rogers home to see the film that caused the problem, and the film is blank, but Rogers restores it and disappears. The Monster appears and attacks the JSA as he tells them that Jason Rogers is his twin brother, whom he hates. After a struggle, the Monster is hit by a lethal ray and is fatally wounded. Dr. Mid-Nite concludes that while the two were twins, the Monster had never developed a body, just a mind, which would often inhabit Roger's body without his knowing it. Meanwhile, the Monster has reverted to his Roger's appearance and, now knowing the truth, dies at peace.