John Carter: Warlord of Mars #11: Digital Exclusive Edition

John Carter and Dejah Thoris discover what may well be the key to repairing the dying atmosphere of Mars. But the long-lost technology of the White Martians is not only protected by deadly robots, it's also being sought by other agents who will stop at nothing to retrieve it. John and Dejah might well save Mars, but only if they can save themselves! The start of a two-part story that could change Mars forever!