The Heather Wells Series is a collection of young adult mystery novels written by author Meg Cabot. The series follows the adventures of Heather Wells, a former pop star turned amateur sleuth, who works as a resident assistant at a college dormitory. The stories blend humor, romance, and mystery as Heather navigates her new life while solving various crimes and uncovering secrets. The series includes several books, starting with "Size 12 Is Not Fat," and features a cast of quirky characters, including Heather's friends and love interests. The novels are known for their lighthearted tone and engaging plots, making them popular among readers who enjoy a mix of mystery and comedy.