Maya is nineteen, effortlessly popular, and knows everyone on campus. She is confident, charming, and used to getting what she wants Her twenty-year-old stepbrother, Daniel, was almost her opposite: exceptionally intelligent, quiet, and happiest when he could disappear into the background with a book.

One evening, Maya appeared in Daniel’s doorway holding her laptop.

“Dan, I need your help.”

Daniel looked up from his textbook suspiciously. “What kind of help?”

“I’ve got an assignment due tomorrow, and I’m completely stuck....