The Warlord of Mars: John Carter of Mars, Book Three

The Gods of Mars ended on a cliffhanger, with John Carter's beloved wife, Dejah Thoris, and her former slave Thuvia caught in the clutches of the evil queen Issus. In order to free them, Carter journeys to the frozen wastelands of northern Mars, where new dangers and horrifying creatures confront him. Can Carter overcome the obstacles to rescue the woman he loves…and finally become the Warlord of Mars?