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John Carter desperately needed the aid of Barsoom's greatest scientist. But Ras Thavas was the prisoner of a nightmare army of his own creation -- half-humans who lived only for conquest. And in their hidden laboratory seethed a horror that could engulf all of Mars.

John Carter desperately needed the aid of Barsoom's greatest scientist. But Ras Thavas was the prisoner of a nightmare army of his own creation -- half-humans who lived only for conquest. And in their hidden laboratory seethed a horror that could engulf all of Mars.

From Phundahl at their western extremity, east to Toonol, the Great Toonolian Marshes stretch across the dying planet for eighteen hundred earth miles like some unclean, venomous, Gargantuan reptile-an oozy marshland through which wind narrow watercourses connecting occasional... Read Full Overview

From Phundahl at their western extremity, east to Toonol, the Great Toonolian Marshes stretch across the dying planet for eighteen hundred earth miles like some unclean, venomous, Gargantuan reptile-an oozy marshland through which wind narrow watercourses connecting occasional... Read Full Overview

John Carter desperately needed the aid of Barsoom's greatest scientist. But Ras Thavas was the prisoner of a nightmare army of his own creation -- half-humans who lived only for conquest. And in their hidden laboratory seethed a horror that could engulf all of Mars.

From Phundahl at their western extremity, east to Toonol, the Great Toonolian Marshes stretch across the dying planet for eighteen hundred earth miles like some unclean, venomous, Gargantuan reptile-an oozy marshland through which wind narrow watercourses connecting occasional... Read Full Overview

John Carter, mighty Warlord of Mars, rides to new and terrifying adventures. Captured by deadly warriors mounted on huge birds he is taken to the ill-omened city of Morbus. There he meets Ras Thavas, evil genius and master surgeon. A man who has succeeded in his nightmare wish... Read Full Overview

John Carter, mighty Warlord of Mars, rides to new and terrifying adventures. Captured by deadly warriors mounted on huge birds he is taken to the ill-omened city of Morbus. There he meets Ras Thavas, evil genius and master surgeon. A man who has succeeded in his nightmare wish... Read Full Overview

John Carter, mighty Warlord of Mars, rides to new and terrifying adventures. Captured by deadly warriors mounted on huge birds he is taken to the ill-omened city of Morbus. There he meets Ras Thavas, evil genius and master surgeon. A man who has succeeded in his nightmare wish... Read Full Overview

From Phundahl at their western extremity, east to Toonol, the Great Toonolian Marshesstretch across the dying planet for eighteen hundred earth miles like some unclean, venomous, Gargantuan reptile-an oozy marshland through which wind narrowwatercourses connecting occasional... Read Full Overview