The official novel of the gargantuan Xbox game hit, HALO. The Human-Covenant War, a desperate struggle for humankind’s very survival, has reached its boiling point and an embattled band of human marines, as well as the Master Chief (star of the Fall of Reach), face the ruthless aliens known as the Covenant. The humans and the Covenant have fallen back to Halo, a ringworld thick with alien species & secrets from an ancient civilisation - secrets that may lead to the defeat of the aliens, and salvation for the human race.