Season 4 Episode 19 – Brave New World
As Noah's life hangs in the balance, Samuel prepares to kill thousands and Peter and the others must band together to stop him and save Emma.
Season 4
Season 4 Episode 18 – The Wall
Fueled by his vision of Emma in danger, Peter tries to rescue Sylar; H.R.G.'s past is revealed; Lauren tries to stop Samuel.
Season 4 Episode 17 – The Art of Deception
The new and different Sylar pays Matt a visit, while Peter tries to warn Emma that Samuel isn't what he seems. Meanwhile, Noah begins his plan to infiltrate the carnival and capture Samuel.
Season 4 Episode 16 – Pass/Fail
Hiro subconsciously deals with some of his past decisions as his brain tumor worsens; Claire receives an unexpected visit from Sylar; Samuel's plan to impress Vanessa takes a frightening turn.
Season 4 Episode 15 – Close to You
H.R.G. exposes Samuel's biggest weakness in an attempt to take him down; Ando and Hiro try to save Dr. Suresh.
Season 4 Episode 14 – Let It Bleed
As Claire becomes immersed in the world of the carnival, she becomes increasingly suspicious of Samuel's motives; Hiro goes on a mission to rescue one of his own; H.R.G. recruits Matt to help him take down Samuel.
Season 4 Episode 13 – Upon This Rock
As Claire becomes immersed in the world of the carnival, she becomes increasingly suspicious of Samuel's motives; Hiro goes on a mission to rescue one of his own; H.R.G. recruits Matt to help him take down Samuel.
Season 4 Episode 12 – The Fifth Stage
Noah has a surprise run-in with visitors; Samuel makes progress on his plan; Peter goes to extremes to obtain what he wants; and Claire comes to an unexpected destination
Season 4 Episode 11 – Thanksgiving
hosts an unconventional Thanksgiving dinner; the Petrelli family receives a surprise guest; Lydia searches for the truth.
Season 4 Episode 10 – Brother’s Keeper
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.