The truth behind the death of Iris West revealed at last!
The moment the Flash materializes in the 20th Century, his Cosmic Treadmill explodes, seemingly disintegrating him. Watching the Flash's demise is Professor Zoom, the sinister Reverse Flash. Professor Zoom watches a security tape recording of Iris West Allen's murder, before keeping a scheduled rendezvous at the Powdered Milk factory, with his heroin ring. Having abandoned his life in the 25th Century, Professor Zoom has discovered that he has taken to the life of a criminal, and makes plans to take over the heroin trade. Leaving the factory for his base of operations, Professor Zoom tasks his hirelings to bring him a woman whose features favor West Allen's.
Professor Zoom instructs a cosmetic surgeon to alter this woman's appearance, without her consent, until she is a dead ringer for West Allen. Having seen to his operations, Professor Zoom, out of sheer vanity, makes an historical record of his actions. Upon first arriving in the 20th Century, Professor Zoom approached West Allen, and professed his love for her. West Allen laughed in Professor Zoom's face. Professor Zoom issued her a 24-hour ultimatum, to love him or die, then hypnotically wiped her memory of their encounter. At the Whitlock Masquerade Ball, Professor Zoom approached West Allen, asking for her answer. West Allen slapped him in the face.
After hypnotically erasing her memory once again, Professor Zoom moved off, when the Green Lantern asked to dance with West Allen. A short time later, Professor Zoom followed West Allen, and the Flash, when they isolated themselves upstairs, in the Whitlock Manor. The Flash had been dosed with a lethal amount of heroin, and was beginning to feel it's effects. West Allen went to get the Flash a glass of water, and ran headlong into deranged murderer, Clive Yorkin. Moving so fast as to be invisible to the naked eye, Professor Zoom vibrated his hand into West Allen's head, and scrambled her brain, killing her. When the Flash staggered into the room, in response to West Allen's screams, Professor Zoom, still invisible, forcibly hurled Yorkin out the window.
The Flash succumbed to the heroin in his system, believing that Yorkin had murdered his wife. While Professor Zoom sleeps, a powerful tremor runs through the powdered milk factory. So great are the vibrations that the entire structure collapses into ruins. Professor Zoom awakens to the Flash's voice. The Flash now knows that Professor Zoom is West Allen's true murderer. The Flash survived the detonation of the Cosmic Treadmill by vibrating his molecules at super-human speed, into intangibility, then dispersing them, before the explosion could strike him. Exercising his complete control over every molecule of his body, the Flash then put himself back together, though the process took several hours.
After dismantling Professor Zoom's heroin operation, the Flash has come to exact vengeance on his arch-nemesis. Professor Zoom flees, with the Flash in hot pursuit. Racing across the Pacific Ocean, Professor Zoom kicks up enough sea water, in his wake, to knock the Flash off his feet. Professor Zoom reaches his Time-Tripper, with plans to return to his native 25th Century. The Flash, though, is right on his heels. After mercilessly beating Professor Zoom senseless, the Flash activates the Time-Tripper, to return Professor Zoom to the proper authorities, in his time.
Professor Zoom, though, has rigged the controls to only work for him. Instead of traveling 500 years into the future, to Professor Zoom's time, the Time-Tripper begins moving, rapidly, backwards in time. With the Time-Tripper programmed to travel beyond the beginning of time itself, the Flash makes a desperate gamble, and leaps out into the time stream, leaving Professor Zoom to his doom.
Note: This issue contains the Hostess Superhero Ad, Batman and Professor Plutonium.