Upon seeing a pre-screening of the film, Jodie Foster thought her performance as Sarah Tobias was so awful that she immediately began preparing for and taking the GRE's for graduate school. She was prepared to leave her film career behind and focus on academia...until she won the Academy Award for her performance.
Debra Winger turned down the role of Sarah. Heather Locklear tried to audition for the role, and Ally Sheedy was considered to play Sarah, but she backed out.
Kelly McGillis was offered the role of Sarah Tobias, but having survived a violent sexual assault in 1982 by two men who broke into her apartment, she declined the role and instead fought for the part of Kathryn Murphy.