Welcome aboard, ensign! You've been assigned to duty on the Starship Enterprise. Your mission: investigate a mysterious meteor belt with Captain Kirk...or help Bones combat a deadly disease... or fight an alien race with Mr. Spock. You choose - you can beam over to a phantom ship overrun with mirror-creatures... or match wits against a giant alien who want to crush the Enterprise like a bug. But chose carefully or the Enterprise and you could be lost forever! THIS STAR TREK ADVENTURE BELONGS TO YOU! WELCOME TO THE WORLD OF WHICH WAY BOOKS—WHERE YOU MAKE THINGS HAPPEN!