Time Stryder - Storm Warning

The Time Stryder series is a grand story told on a human scale, which follows George Stryder and Alicia Henderson as they navigate their way through a changing world. Both only eleven years old at the beginning of the series, they soon learn things that no human was ever meant to know: that time is not the relentless linear march toward the future that we all believe it to be, but is instead a vast landscape that mirrors the physical world in a twisted and sometimes frightening form.
They also learn that humans may not be at the top of the food chain, that there are creatures that can move in and out of reality as swiftly as a stray thought... and that they have been feeding for a very long time...