In a vengeful rage, Sally plotted to kill Jerry, with her plan actually starting with setting fire to the canyon; dousing an area of land reserved for condos with gasoline and dropping a lit flare. She then switched Jerry's asthma medicine with antacids used for allergies, and she tampered with Jerry's air tank--knowing he would be on call at the site of the fire. It was there that Jerry's air ran out and he suffocated to death.
When Steve Sloan found a cap to a gasoline can at the scene, the evil Sally knocked him out with a shovel--knowing that the cap would link her to the arson. In the climax, Sally found Mark Sloan investigating at Jerry's house, and it was there that she was revealed as the arsonist and murderess. Sally's motive was clearly anger over Jerry's infidelity, but when asked about setting the fire, Sally had accused the townspeople of lying to her. She claimed that they knew about Jerry's infidelity but said nothing to her, and it was at that moment that she began burning down the home. Before Sally could drop the lit flare, Howard Pucell appeared and stopped the villainess from doing so, saving Mark in the process. Sally was arrested for arson and for Jerry's murder.
- Marisol Nichols later appeared on NCIS: Los Angeles as the evil Tracy Keller.
- "They all said that they wanted to help me. Did they tell me about Jerry? No. They were just laughing at me. Now they're paying for it." (Sally Tremont revealing her vengeful demeanor towards Jerry and the townspeople)