Claire decides to take on one of the villains herself, but she may not be as invulnerable as she believes. Nathan and Tracy search for the truth about their origins. Maya makes a shocking discovery. Hiro and Ando look for help in the most unlikely places.
Elenco: Greg Grunberg , Ali Larter , Masi Oka , Hayden Panettiere , Adrian Pasdar , Sendhil Ramamurthy , Milo Ventimiglia , Jack Coleman , Robert Knepper , James Kyson , Cristine Rose , Zachary Quinto , Greg Grunberg , Jack Coleman , James Kyson , James Kyson Lee , Jayma Mays , Jimmy Jean-Louis , Kristen Bell , Leonard Roberts , Lestat , Lyndsy Fonseca , Malcolm McDowell , Masi Oka , Noah Gray-Cabey , Robert Knepper , Santiago Cabrera , Sendhil Ramamurthy , Stephen Tobolowsky , Tawny Cypress .