Heiligtum sits on the side of a mountain. It's the home of Erica Cameron's sister Christina, and her husband Frank. Frank has disappeared. Christina, with good reason, fears for his life. Erica travels to Heiligtum to help find him.

Erica has another reason to go there. She has a terrible secret. Erica and her friends risked their lives and their very souls because of what was hidden at Lanshoud. Now they will have to do so again, only now they are not the only people who know that something incredible lies at Heiligtum.

Expect the unexpected.