Sweet Valley High #111: A Deadly Christmas
In case you missed the other books in this story, Jessica basically stole the fiance of her mom's college roommate's daughter Sue. Sue was kidnapped for a time, and after they found her, a private investigator named Sam caught the kidnapper taking the fake ransom. Jessica sees the kidnapper and realizes that he was wearing the same ring she gave Jeremy. Dun dun dun duh. Jeremy shows up at the house, and she still throws herself into his arms. She convinces herself that it was just a similar ring and that her Jeremy would never do something like that. After the two go out on a date, he tells her that he wants to really show her how much he loves her. This leads to her and Lila shopping for lingerie for her big night. What she doesn't know is that Sue and Jeremy are still together. They keep sneaking around on dates, and he keeps telling her that he isn't interested in Jessica. Sue is conveniently in the dressing room next to Jessica and overhears her co