When John Bravais was sent on a secret mission to observe a war in North Africa he found out more than it was safe for him to know -- even after he had secretly been surgically transformed so that he was as strong as a Bolo tank, and nearly as tough: Wolf-like aliens, invisible to the ordinary eye, were harvesting the brains of the fallen fighters! Brevais might have become the Ultimate Warrior, but still he was only one man against A Plague of Demons. This complete novel, plus five short novels and more in a huge volume by the master of interstellar action and adventure.

Contents:

• A Plague of Demons
• Thunderhead
• End as a Hero
• Doorstep
• Test to Destruction
• The Star-Sent Knaves
• Greylorn
• Of Death What Dreams