This audiobook is narrated by an AI Voice. Shot down and hunted across the dead Martian city of Illar, the outlaw Northwest Smith crouches in the ruins with nothing but his ray-gun and his steel-pale stare – until a woman of impossible beauty, white-skinned and purple-haired, beckons him through an unseen doorway into a twilit world that should not exist. There, among a fearful little people, stands the Tree of Life: an ancient, hungering horror called Thag, whose unbearable song lures every living thing into its waiting branches. The woman is its priestess, and Smith is the offering. To break free he must do what no captive of Thag has ever done – resist a music older than Mars, woven by a god that bent space itself to cage its prey.