Ronald Webster's killer started the car fire to lure Joe's fire company out of the firehouse for a long enough period of time that he could steal the Jaws of Life package. The killer then attached a set of alligator jaws to the inside of the spreader to make the alligator bite look authentic and also enable him to replicate the biting force of an alligator. The following night, the killer broke into Webster's house, and knocked Webster out. After stripping him of his clothes, he put the body in the bathtub and filled it up with water (which he then laced with table sea-salts). Then the killer clamped the Jaws down on Webster, who must have regained consciousness and tried to fight back against his attacker, which explains the streaks Monk found on the floor near the bathtub when he investigated the apartment. After Webster was dead, the killer lugged the Jaws of Life and Webster's body down to his car. After dumping Webster's body and neatly folded clothes at Baker Beach, the killer drove somewhere else and threw the Jaws into the water.