Four months after the defeat of the Dark Friars, Liam O'Connor is finally finding some balance in life. He's juggling college, his friends, and his role as a Keeper of the Crossing. But that balance is about to break, and his friends' safety is on the line. Tariq Ashar is trying to make his new relationship with Liam work while dealing with old secrets tied to Lucas Martindale, the obnoxious and unpredictable grandson of the Head of the Guild. When Lucas' troubled past comes back to haunt him, it pulls Tariq and Liam into danger, putting everything at risk. Meanwhile, a new enemy is rising in Sarumbourne, driven by anger and revenge. As darkness spreads through the city, the Keepers must fight to protect it - or lose what they've sworn to defend.