Lair of Serpents

"It was her seventh year at Hogwarts, and Evelyn Rukin was prepared. She couldn't wait to get back to the school because she rather loved to study. Everyone in the other Houses saw her as a bookworm, but to the Slytherin House, where she was sorted, she was seen as either a genius or a rival." There was only one person who could match her intelligence- Tom Riddle.