"You must understand, Mr. Faust, that this is not the only world that exists. Like the petals of a snowflake, other dimensions weave and lace around our own, sometimes touching our planet, sometimes violently drilling through it. The tunnels were ancient relics, the doomed efforts of some long-dead sorcerer to create a permanent bridge between our world and another." "What other world?" He didn't answer at first. He got up, took a pair of mismatched mugs down from a cabinet, and poured two cups of coffee. He held one out to me. His hand trembled. "The Garden of Eden."