Julie Marrlin was a nightclub singer and the Lizz Worthington’s long lost sister. When patron Mr. Pocketclip developed a crush on her, he hired thug Joe Period to arrange a date. Joe would then fall in love with Julie instead and killed Mr. Pocketclip and accidently killed Julie as well. Lizz was saddened by this news and vowed to avenge her sister, leading to her first case with the police force.
Dick Tracy Vol #17 (1956-1957)