Abby and Connor travel to coastal Witchfield Cove,home to the legendary giant worm,after the death of a camper. They find the worm is no myth but a Labyrinthodont,come through a portal in a cave,accidentally opened by a farmer and her son,tipping waste acids. After its disposal Connor accepts a role in Burton's secret project. Matt traces Emily via the black box he has given her and saves her from being buried in a vault,the former burial place of Ethan's sweetheart Charlotte. However Ethan escapes .

The ARC team gets called to a prison where they find themselves unable to control the anomalies and suspect that Ethan is manipulating them. Suddenly Danny emerges from one of the worm-holes and it transpires that Ethan is his brother Patrick,who went through an anomaly as a boy and for whom Danny has been searching ever since. He had assumed the name Ethan and appeared in different time schemes to wreak havoc and,as he returns through an anomaly,Danny goes after him to keep an eye on him. Before this Danny has warned that Burton knew Helen Cutter and is not to be ...