Sentinels

The planet-destroying Worldmind stands poised to annihilate the Earth, but our mightiest defenders are gone! Ultraa confronts an alien tribunal on the far side of the galaxy. Vanadium faces charges of treason against his own kind. And so Pulsar and her remaining few teammates have no choice-- as zero hour approaches, they must launch a daring-- and terrifying-- raid into the very heart of the Worldmind. "A fantastic writer." --Lyndon Perry, THE FIX