There was something disagreeable, and somehow reptilian, about the cold, contained way Stephen took up his stance, raised his pistol, looked along the barrel with his pale eyes, and shot the head off the king of hearts.
The passage describes a character named Stephen taking a cold and controlled position while preparing to shoot. His demeanor is portrayed as unpleasant and almost reptilian, suggesting emotional detachment or a predatory nature. This highlights Stephen's focus and precision as he aims his pistol.
The act of shooting the king of hearts signifies a critical moment, perhaps reflecting Stephen's state of mind or the tension of the situation. The imagery emphasizes the contrast between his calm exterior and the violent action he is about to perform, revealing deeper themes of conflict and change within the character.