Chainmail: Gateways, Book Two

Dangerous remnants of an extinct interstellar civilization, the Gateways connect the Alpha Quadrant with the farthest reaches of the galaxy. Hidden away in various corners of the universe, the ancient portals could be the future of space travel, but they may also provide an open doorway for an invasion from beyond! Twenty years ago, in the space near Belle Terre, a caravan of alien vessels disapp...