 Tarzan and the Forbidden City

Tarzan and the Forbidden City is a novel by American writer Edgar Rice Burroughs, the twentieth in his series of twenty-four books about the title character Tarzan.A young man named Brian Gregory has disappeared in Africa, looking for the fabled Father of Diamonds; his father and sister want to go rescue him, and they can only enlist Tarzan's help because they know Captain Paul D`Arnot.