A Covenant of Justice — David Gerrold

REBEL BLOOD

The Phaestor have established a reign of blood and terror. Now the genetically engineered predators have set in motion their final plan for the complete enslavement of the galaxy. But they will not go unopposed. For on numerous worlds, humans, androids, and bioforms have joined forces against their vampiric overlords.

As those entrusted with the wisdom of the galaxy sanction the struggle against the Phaestor, a cunning Vampire war queen, her ambitious suitor, and the fierce and invincible Dragon Lord vie for total domination. Standing in the way are the rebels from Thoska-Roole: a band of malcontents, outnumbered and pursued, fighting for their freedom, their lives, and the future of the stars.