Jessica Chastain shares the incredible true story behind her new movie "The Good Nurse," and shares how the real-life superhero she portrays uses compassion to stop the cycle of violence. Jessica also dishes on going to nursing school with her co-star Eddie Redmayne to prepare for the film, and admits they both learned they would not be good nurses. Jessica also chats about her recent trip to Ukraine, her obsession with "Real Housewives," her hilarious prank on James McAvoy, and where she displays her Oscar at home.