" Not just the normal back-and-forth. A prickle in the air, a slicing edge. I couldn't tell if it was about her, or just the day that was it, or if it was the squad. Murder is different. The beat goes faster and harder; the tightrope is higher and narrower. One foot wrong, and you're gone. "

― Tana French , The Secret Place (Dublin Murder Squad, #5)