"Flashing Wheels!"

Police forensics scientist, Barry Allen, comes to the Roller Derby Stadium, to meet his wife, Picture News reporter, Iris West. To Allen's horror, he sees West competing in the roller derby. West is brutally throw over the rail by "Kolossal"Kate Krasher, the roller derby's newest sensation. Moments before West loses consciousness, she sees a horrific vision of Krasher, who appears alien and monstrous. West confides in Allen what she saw, but Allen brushes away West's concerns as a nightmare. As Allen leaves work, the next night, Central City's business district is struck by an earthquake.

Allen goes into action, as the Flash. One minute after the earthquake has struck, the Flash has saved countless lives. At the Science Institute, the Flash learns that the epicenter of the earthquake is directly underneath the Roller Derby Stadium. Poking around the stadium, after hours, the Flash notices that the roller skates are all giving off a feint glow of radiation. A closer look reveals alien machinery inside the skates. Krasher clubs the Flash from behind. Moments before the Flash loses consciousness, he, too, sees Krasher as an alien horror.

The Flash awakens, suspended over the stadium floor, bound tightly in what Krasher refers to as a "Strangling Sheath". Krasher confirms that she is, in fact, an alien creature, sent to Earth to destroy it. Krasher's race intends to manufacture a new world to live upon, out of the raw material of the Earth. To that end, Krasher has built a massive Energi-Coil, beneath the roller derby stadium, that stretches down into the Earth's core. Unbeknownst to the other roller derby competitors, the skates they wear are really power chargers, designed to activate the coil, with every revolution around the rink.

Vibrating at super-human speed, the Flash breaks free from the Strangling Sheath. Strapping on a pair of skates, the Flash begins racing counter-clockwise to Krasher, in the hopes of shutting down the Energi-Coil. Suddenly, Krasher reverses direction, and grabs ahold of the Flash as he races past her. When the Energi-Coil fully activates, the Flash realizes Krasher has tricked him. Throwing ten pairs of "skates" on the rink, the Flash keeps them all moving at super-human speed, in the opposite direction, to shut down the Energi-Coil. Krasher lunges for the the Flash, but trips over the speeding skates. With the Earth saved, the Flash turns Krasher over to the authorities.

"The Rival Flash!"

This story was originally published in Flash Comics #104 (February, 1949). A plot synopsis for this story can be found at the link.

"Is This Poison Legal?"

Returning to Blue Valley, after visiting friends at a Hippie commune known as "The Peace Farm", Kid Flash runs into trouble in Greenvale. Two children beg Kid Flash to aid their sick mother. Kid Flash quickly discovers that the children's mother has already died. At the mother's funeral, Jeremy, a Hippie from the Peace Farm, accuses Alex Sampson, the local grocer, of murder. Jeremy believes the chemicals Sampson uses at his chicken farms are poisoning the people of Greenvale. Jeremy breaks into one of Sampson's chicken farms, in search of evidence of Sampson's wrongdoing.

Sampson tries to gun Jeremy down, but Kid Flash rescues him, and spirits him away. Kid Flash has Jeremy, and the Peace Farm Hippies, park trucks in front of Sampson's grocery store. Then they begin to hand out food. Sampson orders the sheriff to arrest them, but the sheriff can't take legal action until Sampson's grocery actually opens for the day. While Sampson is distracted by the Hippies, Kid Flash brings a State Inspector down to investigate Sampson's chicken farms. Finding evidence of wrongdoing, the State Inspector places Sampson under arrest.