The Paradise Tree

From the back cover of the Ace first edition: "Imagine the Abyss, where Heaven and Hell prepare their forces for the ultimate war... Imagine eight men and women - swept into this Otherworld by computers, magic, and drug-generated living dreams - all humanity dependent on their choices for its future freedom... or slavery. Imagine a modern city, become a battleground in this most ancient of conflicts. Now, let the struggle begin!"