 To fan Phoebe s envy, Prue s photographic subject is hunky actor Evan Stone, but she appeals to his courteous side to shake of the press hordes which his attentions for her draw on the Halleywell mansion. Meanwhile an astrally projecting chimp brings the sisters on the trace of the scientific experiments of Dr. Curtis Williamson (who treated Piper s comatose fever earlier, in episode "Awakened") with their blood, giving their powers to three monkeys and to him, and once his sister is about to die for lack of a donor kidney turns evil by surgically  harvesting  organs from criminals who escaped justice on technicalities.