That evening, Emily started the first phase of their plan. She printed out an anonymous letter with ominous words: “I know what you’ve done. You better watch your back.” She rode her bike to a post box far from home and mailed it to Mark’s office, careful to leave no trace.
The next morning, Emily watched Mark closely at breakfast. He seemed his usual self—calm, charming, and engaging with Linda. But as the day went on, she imagined the letter waiting for him at his desk, and she wondered how he’d react when he read it.