Tarzan's beloved mate, Jane, has been kidnapped, and the furious ape-man will let nothing stand in the way of rescuing her - not even a sinister safari whose target is Tarzan himself. With fierce Masai trackers leading the chase, a trio of white hunters are hellbent on capturing the Jungle Lord. But as the pursuers, and their uncanny half-human tracker, close in from behind, Tarzan races toward even greater danger ahead. For the trail leads to a bizarre, long-forgotten land boasting a multitude of strange and terrifying mysteries: the City Built by God, the Hideous Hunter, and more.

With the African continent engulfed by World War II, John Clayton, Lord Greystoke, abandons his role as Lord of the Jungle in order to combat the spreading Nazi menace. Flying a P-40 Tomahawk warplane, Clayton is sent on his first mission: to rescue the missing British Military Intelligence officer code-named Ilex. But the daring task plunges him into his savage past after he’s forced down in a lost land that seems hauntingly familiar. 

 In 1940, as the world hurtled into the darkness of global conflict, Edgar Rice Burroughs turned his legendary writing talents toward an interstellar tale of wonder and adventure set on a war-racked planet - one whose star was so distant that it was invisible to the Earth's most powerful telescopes.

Chris West’s deadly prowess with his weapon of choice had earned him the name Red Axe in the Stone Age world of Pellucidar at the Earth’s core. Sentenced to die along with the woman he loved by the merciless Mahars, West had fought his way free of the lethal laboratories and ghastly arenas of their underground city. Now he must carve a path for his small band of fugitives through a primordial landscape teeming with monstrous beasts and brutish men bent on their destruction.

In this, the second book of Burroughs' Amtor series, Napier travels over perilous mountains and through forests, inhabited by creatures more terrifying than any nightmare, in search of the lovely princess Duare, who has been snatched from his arms. In the Room of the Seven Doors, Napier faces the choice of his life. Six doors led to terrible deaths—the seventh is the door to life. But for him, this door too leads only to new dangers on a planet whose beasts and men are more frightful than any that stalk his native Earth.