abanazer rummaged in a drawer , in which bod could see a half-empty bottle of whisky , and pulled out an almost-finished packet of chocolate chip cookies , and he offered one to the boy ; he turned on the desk light , looked at the brooch again , the swirls of red and orange in the stone , and he examined the black metal band that encircled it , suppressing a little shiver at the expression on the heads of the snake-things .