S01E19: The Key
Michael must get the key to the infirmary and enlist the help of an old face, while Lincoln learns the identity of his kidnapper and another inmate learns of the escape.
Previous Episode 
Season 1
Pilot
S1E1 / 29 Aug 2005
Allen
S1E2 / 29 Aug 2005
Cell Test
S1E3 / 05 Sep 2005
Cute Poison
S1E4 / 12 Sep 2005
English, Fitz or Percy
S1E5 / 19 Sep 2005
Riots, Drills and the Devil (1)
S1E6 / 26 Sep 2005
Riots, Drills and the Devil (2)
S1E7 / 03 Oct 2005
The Old Head
S1E8 / 24 Oct 2005
Tweener
S1E9 / 31 Oct 2005
Sleight of Hand
S1E10 / 07 Nov 2005
And Then There Were 7
S1E11 / 14 Nov 2005
Odd Man Out
S1E12 / 21 Nov 2005
End of the Tunnel
S1E13 / 28 Nov 2005
The Rat
S1E14 / 20 Mar 2006
By the Skin and the Teeth
S1E15 / 27 Mar 2006
Brother's Keeper
S1E16 / 03 Apr 2006
J-Cat
S1E17 / 10 Apr 2006
Bluff
S1E18 / 17 Apr 2006
The Key
S1E19 / 24 Apr 2006
Tonight
S1E20 / 01 May 2006
Go
S1E21 / 08 May 2006
Flight
S1E22 / 15 May 2006
Season 2
Manhunt
S2E1 / 21 Aug 2006
Otis
S2E2 / 28 Aug 2006
Scan
S2E3 / 04 Sep 2006
First Down
S2E4 / 11 Sep 2006
Map 1213
S2E5 / 18 Sep 2006
Subdivision
S2E6 / 25 Sep 2006
Buried
S2E7 / 02 Oct 2006
Dead Fall
S2E8 / 23 Oct 2006
Unearthed
S2E9 / 30 Oct 2006
Rendezvous
S2E10 / 06 Nov 2006
Bolshoi Booze
S2E11 / 13 Nov 2006
Disconnect
S2E12 / 20 Nov 2006
The Killing Box
S2E13 / 27 Nov 2006
John Doe
S2E14 / 22 Jan 2007
The Message
S2E15 / 29 Jan 2007
Chicago
S2E16 / 05 Feb 2007
Bad Blood
S2E17 / 19 Feb 2007
Wash
S2E18 / 26 Feb 2007
Sweet Caroline
S2E19 / 05 Mar 2007
Panama
S2E20 / 19 Mar 2007
Fin Del Camino
S2E21 / 26 Mar 2007
Sona
S2E22 / 02 Apr 2007
Season 3
Orientación
S3E1 / 17 Sep 2007
Fire/Water
S3E2 / 24 Sep 2007
Call Waiting
S3E3 / 01 Oct 2007
Good Fences
S3E4 / 08 Oct 2007
Interference
S3E5 / 22 Oct 2007
Photo Finish
S3E6 / 05 Nov 2007
Vamonos
S3E7 / 05 Nov 2007
Bang and Burn
S3E8 / 12 Nov 2007
Boxed In
S3E9 / 14 Jan 2008
Dirt Nap
S3E10 / 21 Jan 2008
Under and Out
S3E11 / 04 Feb 2008
Hell or High Water
S3E12 / 11 Feb 2008
The Art of the Deal
S3E13 / 18 Feb 2008
Season 4
Scylla
S4E1 / 01 Sep 2008
Breaking & Entering
S4E2 / 01 Sep 2008
Shut Down
S4E3 / 08 Sep 2008
Eagles and Angels
S4E4 / 15 Sep 2008
Safe and Sound
S4E5 / 22 Sep 2008
Blow Out
S4E6 / 29 Sep 2008
Five the Hard Way
S4E7 / 06 Oct 2008
The Price
S4E8 / 20 Oct 2008
Greatness Achieved
S4E9 / 03 Nov 2008
The Legend
S4E10 / 10 Nov 2008
Quiet Riot
S4E11 / 17 Nov 2008
Selfless
S4E12 / 24 Nov 2008
Deal Or No Deal
S4E13 / 01 Dec 2008
Just Business
S4E14 / 08 Dec 2008
Going Under
S4E15 / 15 Dec 2008
The Sunshine State
S4E16 / 22 Dec 2008
The Mother Lode
S4E17 / 17 Apr 2009
VS.
S4E18 / 24 Apr 2009
S.O.B.
S4E19 / 01 May 2009
Cowboys and Indians
S4E20 / 08 May 2009
Rate of Exchange
S4E21 / 15 May 2009
Killing Your Number
S4E22 / 15 May 2009
Season 5
Ogygia
S5E1 / 04 Apr 2017
Kaniel Outis
S5E2 / 11 Apr 2017
The Liar
S5E3 / 18 Apr 2017
The Prisoner's Dilemma
S5E4 / 25 Apr 2017
Contingency
S5E5 / 02 May 2017
Phaecia
S5E6 / 09 May 2017
Wine Dark Sea
S5E7 / 16 May 2017
Progeny
S5E8 / 23 May 2017
Behind the Eyes
S5E9 / 30 May 2017
Wentworth Miller
Michael Scofield
Dominic Purcell
Lincoln Burrows
Sarah Wayne Callies
Sara Tancredi
Paul Adelstein
Paul Kellerman
Rockmond Dunbar
Benjamin 'C-Note' Franklin
Robert Knepper
Theodore 'T-Bag' Bagwell
Amaury Nolasco
Fernando Sucre
