Lynn Stacy was going to be Peter's date on Halloween but things didn't go as planned.
On one Halloween, Peter planned to attend Donald Trump's party with Lynn Stacy. However, she mistook Slimer, who was wearing a costume resembling Peter, for her date. Slimer kissed and slimed her. Utterly disgusted, Lynn stormed off and refused to explain what happened to the real Peter. Naturally, Peter was angry when he realized Slimer was involved.
- On page four of Ghostbusters Issue #14, Lynn makes a non-canon cameo on lower left corner of the newspaper.
- On page two of Ghostbusters Volume 2 Issue #9, Lynn makes a non-canon cameo as one of the bystanders.
- Marsha Goodman (1989). Episode Call Sheet and SAG Report - "The Halloween Door" (1989).
- Peter Venkman (2009). The Real Ghostbusters - "The Halloween Door" (1989) (DVD ts. 01:03-01:06). Time Life Entertainment. Peter says: "Well, after our gig at the junior high this afternoon, I'm taking Lynn Stacy to the party at Donald Trump's place."