4400 taken, 4400 returned. With no memory of where they've been. And they haven't aged a day. Some have returned with startling new abilities... Eleven-year-old Maia can see the future, and she's never wrong. So when she has a vision of Mount Rainier starting to erupt, the National Threat Assessment Command takes her warning very seriously. But to track down the unknown returnee who may trigger the volcanic eruption, NTAC agents Tom Baldwin and Diana...