Noah gets some unexpected visitors, while Claire arrives at the carnival as Samuel’s plans progress. Elsewhere, Peter confronts Sylar and discovers that extreme measures are necessary to stop him.
As Noah hosts a Thanksgiving dinner, an unexpected guest visits the Petrellis. Meanwhile, Lydia tries to discover the truth about one of the carnival’s secrets.
As Matt continues his battle to resists Sylar’s mental domination, Tracy struggles to control her ability and Samuel learns how to tap into the full power of his.
Claire tries to determine who is responsible for the attacks on Gretchen and Annie. Sylar maintains his control of Matt, and Peter uses his newly gained ability to help Emma.
A trip into the past may give Hiro another chance to save the love of his life.
Sylar continues to torment Matt. HRG and Tracy help a young boy who has suffered many hardships in his life. Claire and Gretchen have a problem with their new sorority sisters hazing them.
Sylar starts to find his true identity. Peter and HRG go on a quest to find someone that can save Hiro.
Lydia cautions Samuel against bringing in new members to their clan. Peter tries to connect with Emma, who wants nothing to do with him, and Sylar struggles to find the person he once was.
Hiro’s health continues to deteriorate as he goes on a mission to prevent a coworker from committing suicide. Ando finally convinces Hiro to tell his sister that he’s fatally ill. Meanwhile, Tracy continues to struggle to find a purpose in...
Peter must face the consequences of his actions and also meets a new female hero. Claire deals with others knowing about her ability. Samuel fights to find his brother Joseph’s memories. When Sylar returns, Matt must struggle with his own inner...