However, as she delved deeper into the PDF, Emily noticed something strange. The file seemed to have been accessed recently, and there were faint notes in the margins that she didn't recognize. A shiver ran down her spine as she wondered who could have accessed her file and made these mysterious notes.
Some versions of the series are archived for digital borrowing.
As she pondered her next move, Emily's friends arrived at her doorstep, eager to start their project. She hesitated, unsure whether to share her discovery with them. But as they sat down to work on their maths problems, Emily realized that she needed their help to unravel the mystery.