Abby and Chris find an anonymous love note at school and set out to find who wrote it. Abby figures out that the author and intended recipient apparently had sex the night before and, in her true devious fashion, she sets out to expose the affair. The three suspect couples are: Dawson and Jen; Joey and Jack; Andie and Pacey. Abby and Chris work from clues about Joey's night of sketching after discovering her drawings of a nude Jack, while angry Dawson sets out to find Joey and Jack, while Pacey becomes distant towards Andie after their romantic dinner. In a true Gothic themed mystery novel backdrop complete with a thunderstorm and lighting, Abby and Chris gather all six suspects into a classroom after hours to bring out the author and which couple, if any, went "all the way".