Don't speed through the summaries, as how one of these reprints wasn't really a reprint....
This story deal with Barry Allen dealing with the Top, one of his Rogue's Gallery solo (in between the first two appearances of the Rogue's Gallery's appearances), with the villain sending the Flash spinning by trying to steal an experimental anti-aging serum. When the Top tries the formula on the Flash, the Flash appears to age at super speed! This was a set up by the Flash, so the Top would leave him alone, and the Flash could follow the Top to his headquarters, but Flash couldn't find the formula there. So, Flash tries again, this time pretending to be a hyper-evolved man with fantastic powers, gotten from a combination of the formula and one of the Top's super speed spinning gimmicks. Top escapes the Flash, to get the vial, and gain those "powers".....but, the Flash followed him at super speed, and was able to recover the formula.
Wally was taking a fraternity initiation test with his pal Pete Willard, staying in a haunted house until midnight. Pete and Wally talk about Kid Flash, with Pete telling Wally he doesn't really believe in Kid Flash. Then, the boys are approached by "ghosts" (two men in white sheets) who chase the boys away. Wally changes into Kid Flash (who had a smaller version of Barry's costume at this time), who uses his super speed to chase the two men (who were using the house for crime) to the police station. Then, heading back, Kid Flash saves Pete from a rockslide, earning his respect. Wally beats Pete back to the house and switches back to Wally, in time enough for the pair to finish their initiation into the fraternity.
It was also a rough deal for original artist Martin Naydel, as they had the story redrawn by Rico Rival, giving the feel of a newer story, from a Golden Age one!
Jay, Barry and Wally - as well as the Reverse-Flash, and both Johnny Quicks (the one from Earth-2 and the other from Earth-3), but...
....you can follow the links to find info on them, and enjoy this art by Carmine Infantino of the 3 Flashes instead!