Hiro attempts to delve into Arthur Petrelli's past to uncover the mystery behind him creating a rival company Pinehearst and his hatred towards Angela. Sylar stricken by guilt tries to stop his murderous ways with HRG and Elle vying for his blood. Meredith's training goes up in smoke with the arrival of her brother.

Nathan's plans face exposure as Homeland Security begins an investigation under direct orders from the President of the United States. Sylar and Luke embark on a road trip to find Sylar's father, but are secretly being hunted by Nathan's agents. Life gets complicated for the Bennet family as Claire goes into action to protect a young man with abilities from being captured by HRG. Elsewhere, Matt's prophetic images lead Hiro and Ando to India and a mysterious ally comes to the aid of our Heroes

"Tabula Rasa" is the fifth episode of the fourth season of the NBC science fiction drama series Heroes and sixty-fourth episode overall. The episode aired on October 19, 2009.

"Close to You" is the fourteenth episode of the fourth season of the NBC science fiction drama series Heroes, and the seventy-third episode overall. The episode aired on January 11, 2010.