In his bedroom, Jack Ryan vowed to his new doctor girlfriend Dr.Catherine "Cathy" Muller (Bridget Moynahan), a second year surgical resident at Baltimore Memorial Hospital, that he wasn""t scared of falling in love with her.Although Hepburn had a brilliant performance in this film, she was an unconventional, independent-spirited performer, and this was her last film for RKO - since she had been infamously labeled ""box-office poison"" through most of the 30s." The Commissioner unveiled a Bat-Signal that was to be used to summon Batman.The closing shot was of Batman silhouetted on a rooftop against the Gotham skyline, watching the Bat-Signal projected and shining in the distance.The film was advertised with the brooding face of one of the young German recruits sent into World War I.