Greg Bear is the author of more than thirty books of science fiction and fantasy, including Forerunner: Cryptum, Mariposa, Darwin's Radio, Eon, and Quantico. He is married to Astrid Anderson Bear and is the father of Erik and Alexandra. His works have been published internationally in over twenty languages. Bear has been called the "Best working writer of hard science fiction" by "The Ultimate Encyclopedia of Science Fiction."
After barely surviving his last tour on Mars, Master Sergeant Michael Venn finds himself back on earth in enforced isolation. Through a dangerous series of operations he returns to Mars to further his investigation into the Drifters--ancient artifacts suddenly reawakened on the red planet.