One of his students, Alicia Larde, asks him to dinner, and they fall in love. On a return visit to Princeton, Nash runs into Charles and his niece, Marcee. With Charles' encouragement, he proposes to Alicia and they marry. Nash fears for his life after surviving a shootout between Parcher and Soviet agents, and learns Alicia is pregnant, but Parcher forces him to continue his assignment. While delivering a guest lecture at Harvard University, Nash tries to flee from people he thinks are Soviet agents, led by psychiatrist Dr. Rosen, but is forcibly sedated and committed to a psychiatric facility.