Little Gracie Sheffield will be on Heroes

Madeline Zima to Star in Heroes
Source:The Hollywood Reporter
June 3, 2009

The Hollywood Reporter says that "Heroes'" Claire Bennet (Hayden Panettiere) is off to college in the fourth season of the show.

She will cross paths on the college campus with a quirky student played by Madeline Zima. "Californication" co-star Zima has been hired to recur on the NBC drama.

In a multi-episode arc she will play Gretchen, an edgy outsider and college roommate to Claire.

source