Blurb from back of book: "Can you unravel the clues and solve the mystery of The Black Light and save the Free Planets? One by one the Free planets have fallen to the relentless advance of the dark ships until only Caldoran and Palonar remain. Then a last, despairing message comes from Palonar and Caldoran is on its own. It seems that the invaders, armed with the power of the invincible Black Light, will soon conquer the last outpost of resistance. The only hope for the survival of Caldoran is one last desperate mission by a small group of star fighters to strike at the source of the Black Light. YOU are a part of the mission. As you speed across the galaxy, all the information you need is there, ingeniously hidden in both text and pictures, and each strand of the mystery unravels to reveal the next. But are YOU sharp enough to crack it? Can YOU complete the task you have been set? Your fellow ships of Starflight Zero await you. Do YOU dare take up the challenge?"