Choose Your Own Adventure #21 Hyperspace Edward Packard 1983 Bantam Books

Choose Your Own Adventure #21 Hyperspace Edward Packard 1983 Bantam Books. Your new neighbor, Professor Zinka, is a brilliant scientist who is exploring the mysteries of Hyperspace. One day he invites you into his secret laboratory to show you his most daring invention—the hypolaser. Before you can stop him, he pulls a red lever—and vanishes into another dimension! What should you do? If you decide to pull the red lever too, turn to page 26. If you decide to pull the green lever and try to bring your professor back, turn to page 33. Be careful! If you enter this strange new universe you might meet your own double, or become the ruler of an alien race—or even be turned into a bat! Cover has some wear around the edges. Pages inside are yellowed from age but no rip or markings. Please see pictures.