A comet strikes the sun, endangering Earth-2 with radiation. Meanwhile, Barry and Iris attend a costume party on Earth 1, and the proceeds are stolen by Captain Cold. Two crimes, two Flashes! Jay Garrick and Barry Allen once again join forces as the Flash of Two Worlds!

Written By: Gardner Fox Pencils: Carmine Infantino Inks: Joe Giella Cover By: Carmine Infantino Murphy Anderson