i looked at the moss-covered walls of this filthy throat into which i 'd climbed of my own free will and saw other faces : pam 's ... mary ire 's , twisted in rage as she brought the butt of her gun down on ilse 's head ... kamen 's , filled with terminal surprise as he dropped with his thunderclap heart attack ... tom , twisting the wheel of his car to send it hurtling into concrete at seventy miles an hour .