The Gods of Mars ended on a cliffhanger -- John Carter's beloved wife Dejah Thoris and former slave Thuvia are trapped with vindictive Phaidor by the evil queen Issus in an impenetrable prison cell only accessible once every Martian year. To free them, Carter journeys to the frozen wastelands of northern Mars, full of danger and horrifying creatures.' to 'John Carter risks everything to rescue his wife, Princess Dejah Thoris, from the clutches of his evil adversaries, but he is always just one step behind! His battles cover the face of the red planet, as his quest carries him ultimately to the mysterious northern pole. Will this civilization, submerged in ice, prove fatal to our hero? This is the third of eleven in the popular 'Martian' series by Edgar Rice Burroughs.