Jessica Walter is one of the pre-made downtownies in The Sims 2: Nightlife. She can be made playable by befriending and asking her to move in, or by marrying her. Jessica's career is randomized at the start of the game, and she is mainly interested in Weather, Health, Crime, Sports, and Work.
Jessica's name is randomized when Downtown is generated. The name "Jessica Walter" is only referenced in the game files. Despite being a Family Sim, she has the lifetime want to reach the top of the Criminal career, which is intended only for Knowledge and Fortune Sims.