Bulloch discovers a secret entrance through the cellar, and he and two other officers try to enter. Dr. Stove suggests turning off the central heating source, as this would send the black mamba into a coma. Dave and Howard climb into the cellar at the same time Bulloch and the officers enter. Bulloch shoots and injures Dave, and the black mamba attacks, forcing Bulloch and the officers to flee while Howard flees from the cellar and back onto the first floor. Dave is unable to escape and is killed by the black mamba.