Rising Shadows - Sam Adams, #2

In saving his city of Williamsport, sixteen-year-old wizard Sam Adams uncovered dark revelations that left him shattered. Abby, the girl he loved, was murdered. His memories of her last day were magically erased. And the person responsible is hiding in plain sight. A new threat emerges when an infamous necromancer appears in Williamsport, with a dark agenda that may be connected to her killer. As the undead threaten to tear the city apart, Sam is forced to ally with the very people he suspects of Abby's death.
With paranoia mounting and violence escalating, Sam has to scramble to stay one step ahead of the necromancer­-and to keep from being the killer's next victim. Navigating a lethal web of shifting alliances, Sam is trapped between insidious magic, and human enemies even more deadly. But the darkest demons are waiting in his own mind.