The Guardian (Oxford)

Dylan thought he was an average man with a dead-end job and no great aspirations. When he finds a black book lying innocently on his lawn with peculiar words and markings, he discovers the universe is bigger than he imagined. The guardian of Earth, who kept the book and its immense power safe from falling into the wrong hands, was killed. Now Earth needs a new guardian.

Three years after saving the Earth and Duran, Dylan faces all new challenges. Kiro has disappeared, the Iadnah are turning against their Guardians, and to top it off, a creature as old as the gods is wreaking havoc on Earth. Other strange occurrences are happening throughout the universe, and Dylan will have to investigate them in order to uncover the truth.

Dylan and Mordon will have to fight the very laws of nature to uncover exactly who has betrayed the gods. To keep the gates closed and Dylan's devastating vision from coming true, they must use time as a tool, magic as a weapon, and a map as a key. This time, Dylan will have to wage a battle against a force that cannot be destroyed.

Everyone thinks moving to a small town is going to be a vacation when Dylan decides to return to Earth to be a doctor. He believes the hardest part will be keeping his family's magic a secret. When one of the Guardians tells him about a weapon that is powerful enough to destroy a god, Dylan has to decide if his instincts can be trusted. His decision becomes more complicated when he realizes that something strange is happening at the hospital.

Devon Sanders, a private investigator known for his efficiency and discretion, is planning on being alone for the holiday season. His plans change when a case takes him to a small town in the mountains, where he learns that it's not such a small world after all.

The war has begun between the demons and mortals. Dylan and his family have to uncover the demons' plans in time to prevent their allies from being destroyed. When magic fails them, they must decide what is most important. Having always been known as “the son of Dylan,” Ron is ready to prove himself to whoever will listen. When Ron is separated from his brother, he will have to face the balance alone, and he may not like what he finds in himself. In order to win this time, Ron will have to discover what it is to lose. When the truth finally comes to light, Dylan's family may not be able to handle it. Ron and Hail face a path that they cannot accept, Dylan will have to face an enemy that will make him doubt his own purpose, and this time, magic will not be enough to win the war.