S04E21: When the Levee Breaks
Dean and Bobby have something frightening locked in Bobby's panic room: Sam, who is corrupted by demon blood. With the apocalypse drawing nearer, Bobby wants to free Sam to fight on their side.
Previous Episode 
Season 1
Pilot
S1E1 / 13 Sep 2005
Wendigo
S1E2 / 20 Sep 2005
Dead in the Water
S1E3 / 27 Sep 2005
Phantom Traveler
S1E4 / 04 Oct 2005
Bloody Mary
S1E5 / 11 Oct 2005
Skin
S1E6 / 18 Oct 2005
Hook Man
S1E7 / 25 Oct 2005
Bugs
S1E8 / 08 Nov 2005
Home
S1E9 / 15 Nov 2005
Asylum
S1E10 / 22 Nov 2005
Scarecrow
S1E11 / 10 Jan 2006
Faith
S1E12 / 17 Jan 2006
Route 666
S1E13 / 31 Jan 2006
Nightmare
S1E14 / 07 Feb 2006
The Benders
S1E15 / 14 Feb 2006
Shadow
S1E16 / 28 Feb 2006
Hell House
S1E17 / 30 Mar 2006
Something Wicked
S1E18 / 06 Apr 2006
Provenance
S1E19 / 13 Apr 2006
Dead Man's Blood
S1E20 / 20 Apr 2006
Salvation
S1E21 / 27 Apr 2006
Devil's Trap
S1E22 / 04 May 2006
Season 2
In My Time of Dying
S2E1 / 28 Sep 2006
Everybody Loves a Clown
S2E2 / 05 Oct 2006
Bloodlust
S2E3 / 12 Oct 2006
Children Shouldn't Play With Dead Things
S2E4 / 19 Oct 2006
Simon Said
S2E5 / 26 Oct 2006
No Exit
S2E6 / 02 Nov 2006
The Usual Suspects
S2E7 / 09 Nov 2006
Crossroad Blues
S2E8 / 16 Nov 2006
Croatoan
S2E9 / 07 Dec 2006
Hunted
S2E10 / 11 Jan 2007
Playthings
S2E11 / 18 Jan 2007
Nightshifter
S2E12 / 25 Jan 2007
Houses of the Holy
S2E13 / 01 Feb 2007
Born Under a Bad Sign
S2E14 / 08 Feb 2007
Tall Tales
S2E15 / 15 Feb 2007
Roadkill
S2E16 / 15 Mar 2007
Heart
S2E17 / 22 Mar 2007
Hollywood Babylon
S2E18 / 19 Apr 2007
Folsom Prison Blues
S2E19 / 26 Apr 2007
What Is and What Should Never Be
S2E20 / 03 May 2007
All Hell Breaks Loose (1)
S2E21 / 10 May 2007
All Hell Breaks Loose (2)
S2E22 / 17 May 2007
Season 3
The Magnificent Seven
S3E1 / 04 Oct 2007
The Kids Are Alright
S3E2 / 11 Oct 2007
Bad Day at Black Rock
S3E3 / 18 Oct 2007
Sin City
S3E4 / 25 Oct 2007
Bedtime Stories
S3E5 / 01 Nov 2007
Red Sky at Morning
S3E6 / 08 Nov 2007
Fresh Blood
S3E7 / 15 Nov 2007
A Very Supernatural Christmas
S3E8 / 13 Dec 2007
Malleus Maleficarum
S3E9 / 31 Jan 2008
Dream a Little Dream of Me
S3E10 / 07 Feb 2008
Mystery Spot
S3E11 / 14 Feb 2008
Jus in Bello
S3E12 / 21 Feb 2008
Ghostfacers!
S3E13 / 24 Apr 2008
Long-Distance Call
S3E14 / 01 May 2008
Time Is on My Side
S3E15 / 08 May 2008
No Rest for the Wicked
S3E16 / 15 May 2008
Season 4
Lazarus Rising
S4E1 / 18 Sep 2008
Are You There, God? It's Me, Dean Winchester
S4E2 / 25 Sep 2008
In the Beginning
S4E3 / 02 Oct 2008
Metamorphosis
S4E4 / 09 Oct 2008
Monster Movie
S4E5 / 16 Oct 2008
Yellow Fever
S4E6 / 23 Oct 2008
It's the Great Pumpkin, Sam Winchester
S4E7 / 30 Oct 2008
Wishful Thinking
S4E8 / 06 Nov 2008
I Know What You Did Last Summer
S4E9 / 13 Nov 2008
Heaven and Hell
S4E10 / 20 Nov 2008
Family Remains
S4E11 / 15 Jan 2009
Criss Angel Is a Douchebag
S4E12 / 22 Jan 2009
After School Special
S4E13 / 29 Jan 2009
Sex and Violence
S4E14 / 05 Feb 2009
Death Takes a Holiday
S4E15 / 12 Mar 2009
On the Head of a Pin
S4E16 / 19 Mar 2009
It's a Terrible Life
S4E17 / 26 Mar 2009
The Monster at the End of this Book
S4E18 / 02 Apr 2009
Jump the Shark
S4E19 / 23 Apr 2009
The Rapture
S4E20 / 30 Apr 2009
When the Levee Breaks
S4E21 / 07 May 2009
Lucifer Rising
S4E22 / 14 May 2009
Season 5
Sympathy for the Devil
S5E1 / 10 Sep 2009
Good God, Y'All!
S5E2 / 17 Sep 2009
Free to Be You and Me
S5E3 / 24 Sep 2009
The End
S5E4 / 01 Oct 2009
Fallen Idols
S5E5 / 08 Oct 2009
I Believe the Children Are Our Future
S5E6 / 15 Oct 2009
The Curious Case of Dean Winchester
S5E7 / 29 Oct 2009
Changing Channels
S5E8 / 05 Nov 2009
The Real Ghostbusters
S5E9 / 12 Nov 2009
Abandon All Hope...
S5E10 / 19 Nov 2009
Sam, Interrupted
S5E11 / 21 Jan 2010
Swap Meat
S5E12 / 28 Jan 2010
The Song Remains the Same
S5E13 / 04 Feb 2010
My Bloody Valentine
S5E14 / 11 Feb 2010
Dead Men Don't Wear Plaid
S5E15 / 25 Mar 2010
Dark Side of the Moon
S5E16 / 01 Apr 2010
99 Problems
S5E17 / 08 Apr 2010
Point of No Return
S5E18 / 15 Apr 2010
Hammer of the Gods
S5E19 / 22 Apr 2010
The Devil You Know
S5E20 / 29 Apr 2010
Two Minutes to Midnight
S5E21 / 06 May 2010
Swan Song
S5E22 / 13 May 2010
Season 6
Exile on Main St.
S6E1 / 24 Sep 2010
Two and a Half Men
S6E2 / 01 Oct 2010
The Third Man
S6E3 / 08 Oct 2010
Weekend at Bobby's
S6E4 / 15 Oct 2010
Live Free or Twihard
S6E5 / 22 Oct 2010
You Can't Handle the Truth
S6E6 / 29 Oct 2010
Family Matters
S6E7 / 05 Nov 2010
All Dogs Go to Heaven
S6E8 / 12 Nov 2010
Clap Your Hands If You Believe...
S6E9 / 19 Nov 2010
Caged Heat
S6E10 / 03 Dec 2010
Appointment in Samarra
S6E11 / 10 Dec 2010
Like a Virgin
S6E12 / 04 Feb 2011
Unforgiven
S6E13 / 11 Feb 2011
Mannequin 3: The Reckoning
S6E14 / 18 Feb 2011
The French Mistake
S6E15 / 25 Feb 2011
...And Then There Were None
S6E16 / 04 Mar 2011
My Heart Will Go On
S6E17 / 15 Apr 2011
Frontierland
S6E18 / 22 Apr 2011
Mommy Dearest
S6E19 / 29 Apr 2011
The Man Who Would Be King
S6E20 / 06 May 2011
Let It Bleed
S6E21 / 20 May 2011
The Man Who Knew Too Much
S6E22 / 20 May 2011
Season 7
Meet the New Boss
S7E1 / 23 Sep 2011
Hello, Cruel World
S7E2 / 30 Sep 2011
The Girl Next Door
S7E3 / 07 Oct 2011
Defending Your Life
S7E4 / 14 Oct 2011
Shut Up, Dr. Phil
S7E5 / 21 Oct 2011
Slash Fiction
S7E6 / 28 Oct 2011
The Mentalists
S7E7 / 04 Nov 2011
Season Seven, Time for a Wedding!
S7E8 / 11 Nov 2011
How to Win Friends and Influence Monsters
S7E9 / 18 Nov 2011
Death's Door
S7E10 / 02 Dec 2011
Adventures in Babysitting
S7E11 / 06 Jan 2012
Time After Time
S7E12 / 13 Jan 2012
The Slice Girls
S7E13 / 03 Feb 2012
Plucky Pennywhistle's Magical Menagerie
S7E14 / 10 Feb 2012
Repo Man
S7E15 / 17 Feb 2012
Out with the Old
S7E16 / 16 Mar 2012
The Born-Again Identity
S7E17 / 23 Mar 2012
Party On, Garth
S7E18 / 30 Mar 2012
Of Grave Importance
S7E19 / 20 Apr 2012
The Girl with the Dungeons and Dragons Tattoo
S7E20 / 27 Apr 2012
Reading is Fundamental
S7E21 / 04 May 2012
There Will Be Blood
S7E22 / 11 May 2012
Survival of the Fittest
S7E23 / 18 May 2012
Season 8
We Need to Talk About Kevin
S8E1 / 03 Oct 2012
What's Up, Tiger Mommy?
S8E2 / 10 Oct 2012
Heartache
S8E3 / 17 Oct 2012
Bitten
S8E4 / 24 Oct 2012
Blood Brother
S8E5 / 31 Oct 2012
Southern Comfort
S8E6 / 07 Nov 2012
A Little Slice of Kevin
S8E7 / 14 Nov 2012
Hunteri Heroici
S8E8 / 28 Nov 2012
Citizen Fang
S8E9 / 05 Dec 2012
Torn and Frayed
S8E10 / 16 Jan 2013
LARP and the Real Girl
S8E11 / 23 Jan 2013
As Time Goes By
S8E12 / 30 Jan 2013
Everybody Hates Hitler
S8E13 / 06 Feb 2013
Trial and Error
S8E14 / 13 Feb 2013
Man's Best Friend with Benefits
S8E15 / 20 Feb 2013
Remember the Titans
S8E16 / 27 Feb 2013
Goodbye, Stranger
S8E17 / 20 Mar 2013
Freaks and Geeks
S8E18 / 27 Mar 2013
Taxi Driver
S8E19 / 03 Apr 2013
Pac-Man Fever
S8E20 / 24 Apr 2013
The Great Escapist
S8E21 / 01 May 2013
Clip Show
S8E22 / 08 May 2013
Sacrifice
S8E23 / 15 May 2013
Season 9
I Think I'm Gonna Like It Here
S9E1 / 08 Oct 2013
Devil May Care
S9E2 / 15 Oct 2013
I'm No Angel
S9E3 / 22 Oct 2013
Slumber Party
S9E4 / 29 Oct 2013
Dog Dean Afternoon
S9E5 / 05 Nov 2013
Heaven Can't Wait
S9E6 / 12 Nov 2013
Bad Boys
S9E7 / 19 Nov 2013
Rock and a Hard Place
S9E8 / 26 Nov 2013
Holy Terror
S9E9 / 03 Dec 2013
Road Trip
S9E10 / 14 Jan 2014
First Born
S9E11 / 21 Jan 2014
Sharp Teeth
S9E12 / 28 Jan 2014
The Purge
S9E13 / 04 Feb 2014
Captives
S9E14 / 25 Feb 2014
#THINMAN
S9E15 / 04 Mar 2014
Blade Runners
S9E16 / 18 Mar 2014
Mother's Little Helper
S9E17 / 25 Mar 2014
Meta Fiction
S9E18 / 15 Apr 2014
Alex Annie Alexis Ann
S9E19 / 22 Apr 2014
Bloodlines
S9E20 / 29 Apr 2014
King of the Damned
S9E21 / 06 May 2014
Stairway to Heaven
S9E22 / 13 May 2014
Do You Believe in Miracles?
S9E23 / 20 May 2014
Season 10
Black
S10E1 / 07 Oct 2014
Reichenbach
S10E2 / 14 Oct 2014
Soul Survivor
S10E3 / 21 Oct 2014
Paper Moon
S10E4 / 28 Oct 2014
Fan Fiction
S10E5 / 11 Nov 2014
Ask Jeeves
S10E6 / 18 Nov 2014
Girls, Girls, Girls
S10E7 / 25 Nov 2014
Hibbing 911
S10E8 / 02 Dec 2014
The Things We Left Behind
S10E9 / 09 Dec 2014
The Hunter Games
S10E10 / 20 Jan 2015
There's No Place Like Home
S10E11 / 27 Jan 2015
About a Boy
S10E12 / 03 Feb 2015
Halt & Catch Fire
S10E13 / 10 Feb 2015
The Executioner's Song
S10E14 / 17 Feb 2015
The Things They Carried
S10E15 / 18 Mar 2015
Paint It Black
S10E16 / 25 Mar 2015
Inside Man
S10E17 / 01 Apr 2015
Book of the Damned
S10E18 / 15 Apr 2015
The Werther Project
S10E19 / 22 Apr 2015
Angel Heart
S10E20 / 29 Apr 2015
Dark Dynasty
S10E21 / 06 May 2015
The Prisoner
S10E22 / 13 May 2015
Brother's Keeper
S10E23 / 20 May 2015
Season 11
Out of the Darkness, Into the Fire
S11E1 / 07 Oct 2015
Form and Void
S11E2 / 14 Oct 2015
The Bad Seed
S11E3 / 21 Oct 2015
Baby
S11E4 / 28 Oct 2015
Thin Lizzie
S11E5 / 04 Nov 2015
Our Little World
S11E6 / 11 Nov 2015
Plush
S11E7 / 18 Nov 2015
Just My Imagination
S11E8 / 02 Dec 2015
O Brother Where Art Thou?
S11E9 / 09 Dec 2015
The Devil in the Details
S11E10 / 20 Jan 2016
Into the Mystic
S11E11 / 27 Jan 2016
Don't You Forget About Me
S11E12 / 03 Feb 2016
Love Hurts
S11E13 / 10 Feb 2016
The Vessel
S11E14 / 17 Feb 2016
Beyond the Mat
S11E15 / 24 Feb 2016
Safe House
S11E16 / 23 Mar 2016
Red Meat
S11E17 / 30 Mar 2016
Hell's Angel
S11E18 / 06 Apr 2016
The Chitters
S11E19 / 27 Apr 2016
Don't Call Me Shurley
S11E20 / 04 May 2016
All in the Family
S11E21 / 11 May 2016
We Happy Few
S11E22 / 18 May 2016
Alpha and Omega
S11E23 / 25 May 2016
Season 12
Keep Calm and Carry On
S12E1 / 13 Oct 2016
Mamma Mia
S12E2 / 20 Oct 2016
The Foundry
S12E3 / 27 Oct 2016
American Nightmare
S12E4 / 03 Nov 2016
The One You've Been Waiting For
S12E5 / 10 Nov 2016
Celebrating the Life of Asa Fox
S12E6 / 17 Nov 2016
Rock Never Dies
S12E7 / 01 Dec 2016
LOTUS
S12E8 / 08 Dec 2016
First Blood
S12E9 / 26 Jan 2017
Lily Sunder Has Some Regrets
S12E10 / 02 Feb 2017
Regarding Dean
S12E11 / 09 Feb 2017
Stuck in the Middle (With You)
S12E12 / 16 Feb 2017
Family Feud
S12E13 / 23 Feb 2017
The Raid
S12E14 / 02 Mar 2017
Somewhere Between Heaven and Hell
S12E15 / 09 Mar 2017
Ladies Drink Free
S12E16 / 30 Mar 2017
The British Invasion
S12E17 / 06 Apr 2017
The Memory Remains
S12E18 / 13 Apr 2017
The Future
S12E19 / 27 Apr 2017
Twigs & Twine & Tasha Banes
S12E20 / 04 May 2017
There's Something About Mary
S12E21 / 11 May 2017
Who We Are
S12E22 / 18 May 2017
All Along the Watchtower
S12E23 / 18 May 2017
Season 13
Lost and Found
S13E1 / 12 Oct 2017
The Rising Son
S13E2 / 19 Oct 2017
Patience
S13E3 / 26 Oct 2017
The Big Empty
S13E4 / 02 Nov 2017
Advanced Thanatology
S13E5 / 09 Nov 2017
Tombstone
S13E6 / 16 Nov 2017
War of the Worlds
S13E7 / 23 Nov 2017
The Scorpion and the Frog
S13E8 / 30 Nov 2017
The Bad Place
S13E9 / 07 Dec 2017
Wayward Sisters
S13E10 / 18 Jan 2018
Breakdown
S13E11 / 25 Jan 2018
Various & Sundry Villains
S13E12 / 01 Feb 2018
Devil's Bargain
S13E13 / 08 Feb 2018
Good Intentions
S13E14 / 01 Mar 2018
A Most Holy Man
S13E15 / 08 Mar 2018
ScoobyNatural
S13E16 / 29 Mar 2018
The Thing
S13E17 / 05 Apr 2018
Bring 'em Back Alive
S13E18 / 12 Apr 2018
Funeralia
S13E19 / 19 Apr 2018
Unfinished Business
S13E20 / 26 Apr 2018
Beat the Devil
S13E21 / 03 May 2018
Exodus
S13E22 / 10 May 2018
Let the Good Times Roll
S13E23 / 17 May 2018
Season 14
Stranger in a Strange Land
S14E1 / 11 Oct 2018
Gods and Monsters
S14E2 / 18 Oct 2018
The Scar
S14E3 / 25 Oct 2018
Mint Condition
S14E4 / 01 Nov 2018
Nightmare Logic
S14E5 / 08 Nov 2018
Optimism
S14E6 / 15 Nov 2018
Unhuman Nature
S14E7 / 29 Nov 2018
Byzantium
S14E8 / 06 Dec 2018
The Spear
S14E9 / 13 Dec 2018
Nihilism
S14E10 / 17 Jan 2019
Damaged Goods
S14E11 / 24 Jan 2019
Prophet and Loss
S14E12 / 31 Jan 2019
Lebanon
S14E13 / 07 Feb 2019
Ouroboros
S14E14 / 07 Mar 2019
Peace of Mind
S14E15 / 14 Mar 2019
Don't Go in the Woods
S14E16 / 21 Mar 2019
Game Night
S14E17 / 04 Apr 2019
Absence
S14E18 / 11 Apr 2019
Jack in the Box
S14E19 / 18 Apr 2019
Moriah
S14E20 / 25 Apr 2019
Season 15
Back and to the Future
S15E1 / 10 Oct 2019
Raising Hell
S15E2 / 17 Oct 2019
The Rupture
S15E3 / 24 Oct 2019
Atomic Monsters
S15E4 / 07 Nov 2019
Proverbs 17:3
S15E5 / 14 Nov 2019
Golden Time
S15E6 / 21 Nov 2019
Last Call
S15E7 / 05 Dec 2019
Our Father, Who Aren't in Heaven
S15E8 / 12 Dec 2019
The Trap
S15E9 / 16 Jan 2020
The Heroes' Journey
S15E10 / 23 Jan 2020
The Gamblers
S15E11 / 30 Jan 2020
Galaxy Brain
S15E12 / 16 Mar 2020
Destiny's Child
S15E13 / 23 Mar 2020
Last Holiday
S15E14 / 08 Oct 2020
Gimme Shelter
S15E15 / 15 Oct 2020
Drag Me Away (From You)
S15E16 / 22 Oct 2020
Unity
S15E17 / 29 Oct 2020
Despair
S15E18 / 05 Nov 2020
Inherit the Earth
S15E19 / 12 Nov 2020
Carry On
S15E20 / 19 Nov 2020
Jared Padalecki
Sam Winchester
Jensen Ackles
Dean Winchester
