The Calling of the Trinity (Trinity Cycle Book 2)

The fate of the supernatural world lies in the hands of the Trinity. Now that their powers have awakened, they're one step closer to putting an end to the Darkness surrounding them. Or so they thought.
The death of Wren's father brings and unsolicited visit from the Alpha Master of the Thornwood werewolf pack, and with it some troublesome news. Wren is faced with a decision that could end his life if he doesn't choose wisely.
A mysterious book hidden in a secret room just might have the answers the Trinity is searching for. Perhaps with a little help from the past, a winged guardian, and some new friends - the Trinity can persevere and rise against the Darkness.