It was against Ronan’s nature to appear overly interested…

““It was against Ronan’s nature to appear overly interested in anything, but he couldn’t help staring at the Gray Man. It was the man from the Barns, the man who’d taken the puzzle box. He would have never put the words hit man to him. To him, a hit man was something else. A bouncer. A bodybuilder. An action hero. This wary predator was none of those things. His build was unassuming, all sly kinetics, but his eyes — Ronan was suddenly afraid of him. He was afraid of him in the same way that he was afraid of the night horrors. Because they had killed him before, and they would kill him again, and he precisely remembered the pain of each death. He felt the fear in his chest, and in his face, and in the back of his head. Sharp and stinging, like a tire iron. Chainsaw scrambled to Ronan’s shoulder and ducked low, eyes on the Gray Man. She cawed stridently, just once. For his part, the Gray Man stared back, his expression guarded. The longer he looked at Ronan and Chainsaw, the more his eyebrows furrowed. And the longer he looked, the closer Gansey edged to Ronan, nearly imperceptible. At some point it became the Gray Man watching the space between the two of them instead of Ronan.””

— Maggie Stiefvater