At age 15, the death of Victor's mother leaves him in sole control of the Frankenstein estate. He agrees to continue to pay a monthly allowance to his impoverished aunt Sophia and his young cousin Elizabeth. Soon afterwards, he engages scientist Paul Krempe to tutor him. After two years of intense study, Victor and Paul begin collaborating on scientific experiments. One night, after a successful experiment in which they bring a dead puppy back to life, Victor suggests that they create a perfect human being from body parts. Paul assists Victor at first but eventually withdraws, unable to tolerate the continued scavenging of human remains, particularly after Victor's fiancée—his now grown-up cousin Elizabeth—comes to live with them.