Call Down The Hawk by Maggie Stiefvater

After the events of the previous cycle, Ronan Lynch sets out for Ireland following clues about the origin of his ability to pull objects from dreams; the search drags him into violent secrets, family betrayals, and dangerous new enemies. Haunted by grief and the consequences of his power, he forges uneasy alliances, tests loyalties, and must decide what kind of person he wants to be as the novel blends eerie magic, raw emotion, and a noir-tinged quest that expands the world while remaining tightly focused on one volatile, restless young man.

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