Convergence

Librarian note: SFBC 15654 on the back cover. While the copyright page has the ISBN 0-671-87774-7 this is for the paperback edition.

Publisher's summary from the dust jacket: Traveling outward into space, humanity has found we're not alone in the galaxy. Space is full of intelligent alien species whose spheres of influence range as far as our own.

But the galaxy also contains a major mystery. Scattered throughout it are the enigmatic structures left by the Builders, a race that vanished 5,000,000 years ago. The study of Builder Artifacts—constructs whose functions range from the totally comprehensible to the wholly baffling and intangible—has become an obsession to certain scholars and adventurers.

And now the mystery has deepened. The Artifacts—stable for millennia—are changing: fading and vanishing as though they never existed. Even more disturbing, these changes may affect the vital galactic transportation system, a series of wormholes known as the Bose Network.

Whats going on? Could the Builders be calling their constructs home? A researcher on the world of Sentinel Gate has some astonishing theories based on a new Artifact called the Labyrinth. But proving—or disproving—them may be nearly impossible.

For, as its name suggests, the Labyrinth is a maze of bewildering ingenuity and complexity—and once entered, there may be no way out.