Starred Review. Four hostages freed after five years of captivity by a Spanish extremist group vow to keep in touch. But with the oceans steadily rising and governments, corporations, and determined individuals battling for a solution, the hostages find themselves caught in currents of intrigue and politics. The best-selling author of the "Time's Tapestry" series takes a familiar doomsday scenario and gives it an unexpected twist of mythical proportions...