Season 1
Season 1, Episode 1: Pilot

Season 1, Episode 2: The New and Improved Carl Morrissey

Season 1, Episode 3: Becoming

Season 1, Episode 4: Trial by Fire

Season 1, Episode 5: White Light

Season 2
Season 2, Episode 1: Wake-Up Call

Season 2, Episode 2: Voices Carry

Season 2, Episode 3: Weight of the World

Season 2, Episode 4: Suffer the Children

Season 2, Episode 5: As Fate Would Have It

Season 2, Episode 6: Life Interrupted

Season 2, Episode 7: Carrier

Season 2, Episode 8: Rebirth

Season 2, Episode 9: Hidden

Season 2, Episode 10: Lockdown

Season 2, Episode 11: The Fifth Page

Season 2, Episode 12: Mommy's Bosses

Season 3
Season 3, Episode 1: The New World

Season 3, Episode 2: Being Tom Baldwin

Season 3, Episode 3: Gone: Part 1

Season 3, Episode 4: Gone: Part 2

Season 3, Episode 5: Graduation Day

Season 3, Episode 6: The Home Front

Season 3, Episode 7: Blink

Season 3, Episode 8: The Ballad of Kevin and Tess

Season 3, Episode 9: The Starzl Mutation

Season 3, Episode 10: The Gospel According to Collier

Season 3, Episode 11: Terrible Swift Sword

Season 3, Episode 12: Fifty-Fifty

Season 4
Season 4, Episode 1: Wrath of Graham

Season 4, Episode 2: Fear Itself

Season 4, Episode 3: Audrey Parker's Come and Gone

Season 4, Episode 4: The Truth and Nothing But the Truth

Season 4, Episode 5: Try the Pie

Season 4, Episode 6: The Marked

Season 4, Episode 7: Till We Have Built Jerusalem

Season 4, Episode 8: No Exit

Season 4, Episode 9: Daddy's Little Girl

Season 4, Episode 10: One of Us

Season 4, Episode 11: Ghost in the Machine

Season 4, Episode 12: Tiny Machines

Season 4, Episode 13: The Great Leap Forward