Glenda Mark followed Jason Blood to TinTagel Castle in Cornwall to show him a book she had taken from his apartment. In it was a picture of Belial which bore a striking similarity between him and Etrigan The Demon. However, Jason was prevented by magic from seeing the pages which appear blank to him. Believing it was the only way to get answers, Glenda persuaded him to summon Etrigan. Safely imprisoned within a magic circle, Jason allowed The Demon out so Glenda can question him. He was also blind to the pages in the book and after toying with Glenda for a while revealed that if they wanted answers that they should go to Daganbrack Tower in Ireland. Jason was reluctant to go but was persuaded by Glenda that it was the only way to help him be rid of The Demon. When they arrived at Daganbrack, a secret entrance was revealed to them which lead to tunnels beneath the tower. They soon found the Book of Belial which they believed could help them, but were suddenly attacked by the demon Clutcher. Fearing Glenda was about to be killed Jason changed places with Etrigan so that he could fight him.