Darkness at #5 Elm

After learning the way of the warrior, Martha is back home and entering high school. Her first goal as a soldier of the Lord: save Trevor from the pact he made with the drug-dealing demons. The trouble is that he has dropped out of school and disappeared. How can she help him if she doesn't even know where he is? Her first clue is at Number 5 Elm, an empty house to which Trevor invited her months ago. Is he staying there or is that a dwelling place for evil? In this third book of the Merlin & Martha series, she must vie for the freedom of a friend and sharpen her own skills in the struggle if she is to find victory through the Darkness at Number 5 Elm.