S4 E109/21/09

Claire struggles with adjusting to her new life in college when a mysterious death thrusts her into the spotlight once again. Elsewhere, Hiro and Ando continue their noble quest to help people by promoting their abilities. Angela fears Nathan will soon discover his identity; while Matt is haunted by an unexpected visitor seeking something he has lost. Tracy Strauss and H.R.G. join forces, looking for the key to unlock the motive behind a horrific crime. Meanwhile, Peter uses his abilities for good, but he is soon called upon to aid an old friend. While the heroes adjust to their new surroundings, a mysterious carnival clan, led by ringleader Samuel, sets their sights on familiar faces.