The fourth book in the groundbreaking Primogenitor series, Futures of Mars follows the aftermath of the plague that destroyed virtually all of humanity on Earth. Theresa welcomes Richard and her surviving progeny to the Martian colony, but all is not well; Genesis suspects Richard of harboring secrets that could be detrimental to colony unity, and the children are having difficulty fitting in. Carla, David, and Neil are doing their best to hold everything together, but Theresa stands at the center of a brewing storm that threatens to tear the Martians - the last of the human species - apart at the seams.