"""“Walton has brought hard sci-fi roaring back to life.” —WALL STREET JOURNAL PAST AND FUTURE CLASH in the final book of the globe-spanning paleontology thriller that began with Living Memory. The threat of extinction by killer organism leads to world war as national powers vie to control the powerful technology uncovered in Thailand. Samira and her team are on the run from the United States, even as a Chinese scientist mirrors their discoveries and resists her own government's demands. Will the ancient creatures they found turn the tide and save humanity before it tears itself apart? "