John Carter returns to his beloved Helium, only to find it in the clutches of a brutal dictator. His princess, Dejah Thoris, is a prisoner of the evil priests who control the cult of Issus, the false goddess worshipped throughout Mars. John Carter's enemies have branded him a heretic and an outcast, but Carter has his own allies - his son, Carthoris, the great Thark warrior, Tars Tarkas, and his own sword arm! Warlord of Mars #17: Helium Divided is the second-to-last installment of the Gods of Mars story arc. The stage is set for the final confrontation!