Marion starts researching Thomas Stone, who has become a famous liver transplant surgeon in the U.S.
Marion goes to a conference in Boston and attends Stone's session.
Stone asks the group a question, and Marion is the only one who can answer it.
Marion figures out where Stone lives and goes to his apartment. He opens all of the doors and containers, and leaves the bookmark with the note from Sister Mary Joseph Praise on the desk to let him know who was there.
Marion also steals Stone's amputated finger, which is in a bottle of formalin.