“So on the one hand,” said Mary, “we have my father, Dr. Rappaccini, and Dr. Moreau, who all knew each other, and who are all dead. And then we have Dr. Seward and his friend Professor Van Helsing, who knows Mr. Prendick, who knew Dr. Moreau! And then we have Renfield, and the implication that he may at one time have seen Hyde.