Nemesis Game (2003)

Sara Novak is an introverted college student with a few skeletons in her closet. Shying away from classmates, she prefers to spend time with Vern, an older comic store owner who shares her passion for mind games and riddles. But when the riddles she solves lead to the deaths of those around her, she realizes the riddles are more than a simple game.....

Mystery, Thriller