Jack Montgomery

When a broken hearted boy loses the treasured wooden nativity set that links him to his dead father, his worried mother persuades a lonely ill-tempered woodcarver to create a replacement, and to allow her son to watch him work on it.

Eight years after his wife Helen mysteriously disappeared, Nick Cutter and a team of several others investigate reports of a large animal in the Forest of Dean, and discover that mysterious Anomalies in time and space are appearing and allowing prehistoric creatures to cross into the present day.