“Is that what those things are?” she asked. “Around your wrists and neck? Marks?” “These?” He leaned forward, and the change in him was instant, the glowing eyes, the curling horns, the broadening of the shoulders. Without meaning to, Alex found herself scooting back in her chair. He was man and then monster in the space of a breath. The golden bands glowed at his wrists and throat. “Yeah,” she said, trying not to show her fear. “Those.” “These marks mean I am bound in service. Forever.” “To hell? To Golgarot?” He laughed then, the sound deep and cold, the thing at the bottom of the lake. “I’m bound to you, Stern. To the woman who brought me out of hell. I will serve you ’til the end of days.”
―
Leigh Bardugo,
Hell Bent