S04E23: The Debt
Mark learns that the prisoner Micah is escorting to the gallows is the man that saved his life three years previously.
Previous Episode 
Season 1
The Sharpshooter
S1E1 / 30 Sep 1958
Home Ranch
S1E2 / 07 Oct 1958
End of a Young Gun
S1E3 / 14 Oct 1958
The Marshal
S1E4 / 21 Oct 1958
The Brother-in-Law
S1E5 / 28 Oct 1958
Eight Hours to Die
S1E6 / 04 Nov 1958
Duel of Honor
S1E7 / 11 Nov 1958
The Safe Guard
S1E8 / 18 Oct 1958
The Sister
S1E9 / 25 Nov 1958
New Orleans Menace
S1E10 / 26 Dec 1958
The Apprentice Sheriff
S1E11 / 09 Dec 1958
Young Englishman
S1E12 / 16 Dec 1958
The Angry Gun
S1E13 / 23 Dec 1958
The Gaucho
S1E14 / 30 Dec 1958
The Pet
S1E15 / 06 Jan 1959
The Sheridan Story
S1E16 / 13 Jan 1959The Retired Gun
S1E17 / 20 Jan 1959The Photographer
S1E18 / 27 Jan 1959Shivaree
S1E19 / 03 Feb 1959The Deadeye Kid
S1E20 / 10 Feb 1959The Indian
S1E21 / 17 Feb 1959The Boarding House
S1E22 / 24 Feb 1959The Second Witness
S1E23 / 30 Mar 1959The Trade
S1E24 / 10 Mar 1959One Went to Denver
S1E25 / 17 Mar 1959The Deadly Wait
S1E26 / 24 Mar 1959The Wrong Man
S1E27 / 31 Mar 1959The Challenge
S1E28 / 07 Apr 1959The Hawk
S1E29 / 14 Apr 1959Three-Legged Terror
S1E30 / 21 Apr 1959The Angry Man
S1E31 / 28 Apr 1959The Woman
S1E32 / 05 May 1959The Money Gun
S1E33 / 12 May 1959A Matter of Faith
S1E34 / 19 May 1959Blood Brothers
S1E35 / 26 May 1959Stranger at Night
S1E36 / 20 Jun 1959The Raid
S1E37 / 09 Jun 1959
Outlaw's Inheritance
S1E38 / 16 Jun 1959
Boomerang
S1E39 / 23 Jun 1959The Mind Reader
S1E40 / 30 Jun 1959
Season 2
The Patsy
S2E1 / 29 Sep 1959Bloodlines
S2E2 / 06 Oct 1959The Blowout
S2E3 / 13 Oct 1959Obituary
S2E4 / 20 Oct 1959Tension
S2E5 / 27 Oct 1959Eddie's Daughter
S2E6 / 03 Nov 1959Panic
S2E7 / 10 Nov 1959Ordeal
S2E8 / 17 Nov 1959The Spiked Rifle
S2E9 / 24 Nov 1959Letter of the Law
S2E10 / 01 Dec 1959The Legacy
S2E11 / 08 Dec 1959The Baby Sitter
S2E12 / 15 Dec 1959The Coward
S2E13 / 22 Dec 1959Surveyors
S2E14 / 29 Dec 1959
Day of the Hunter
S2E15 / 05 Jan 1960
Mail Order Groom
S2E16 / 12 Jan 1960A Case of Identity
S2E17 / 19 Jan 1960The Visitors
S2E18 / 26 Jan 1960The Hero
S2E19 / 02 Feb 1960The Horse Traders
S2E20 / 09 Feb 1960The Spoiler
S2E21 / 16 Feb 1960Heller
S2E22 / 23 Feb 1960The Grasshopper
S2E23 / 01 Mar 1960A Time for Singing
S2E24 / 08 Mar 1960The Deserter
S2E25 / 15 Mar 1960The Vision
S2E26 / 22 Mar 1960The Lariat
S2E27 / 29 Mar 1960Smoke Screen
S2E28 / 05 Apr 1960Shotgun Man
S2E29 / 12 Apr 1960Sins of the Father
S2E30 / 19 Apr 1960The Prodigal
S2E31 / 26 Apr 1960The Fourflusher
S2E32 / 03 May 1960The Jailbird
S2E33 / 10 May 1960Meeting at Midnight
S2E34 / 17 May 1960Nora
S2E35 / 24 May 1960The Hangman
S2E36 / 31 May 1960
Season 3
Trail of Hate
S3E1 / 27 Sep 1960Woman From Hog Ridge
S3E2 / 04 Oct 1960Seven
S3E3 / 11 Oct 1960The Pitchman
S3E4 / 18 Sep 1960Strange Town
S3E5 / 25 Oct 1960Baranca
S3E6 / 01 Nov 1960The Martinet
S3E7 / 08 Nov 1960Miss Milly
S3E8 / 15 Nov 1960Dead Cold Cash
S3E9 / 22 Nov 1960The Schoolmaster
S3E10 / 29 Nov 1960The Promoter
S3E11 / 06 Dec 1960The Illustrator
S3E12 / 13 Dec 1960The Silent Knife
S3E13 / 20 Dec 1960Miss Bertie
S3E14 / 27 Dec 1960Six Years and a Day
S3E15 / 30 Jan 1961Flowers by the Door
S3E16 / 10 Jan 1961Long Trek
S3E17 / 17 Jan 1961The Actress
S3E18 / 24 Jan 1961Face of Yesterday
S3E19 / 31 Jan 1961The Wyoming Story (1)
S3E20 / 07 Feb 1961The Wyoming Story (2)
S3E21 / 14 Feb 1961Closer than a Brother
S3E22 / 21 Feb 1961The Lost Treasure of Canyon Town
S3E23 / 28 Feb 1961Dark Day at North Fork
S3E24 / 07 Mar 1961The Prisoner
S3E25 / 14 Mar 1961Assault
S3E26 / 21 Mar 1961Short Rope for a Tall Man
S3E27 / 28 Mar 1961The Clarence Bibs Story
S3E28 / 04 Apr 1961The Score is Even
S3E29 / 11 Apr 1961The Mescalaro Curse
S3E30 / 18 Apr 1961Stopover
S3E31 / 25 Apr 1961The Lonesome Bride
S3E32 / 02 May 1961Death Trap
S3E33 / 09 May 1961The Queue
S3E34 / 16 May 1961
Season 4
The Vaqueros
S4E1 / 02 Oct 1961First Wages
S4E2 / 09 Oct 1961Sheer Terror
S4E3 / 16 Sep 1961The Stand-In
S4E4 / 23 Oct 1961The Journey Back
S4E5 / 30 Oct 1961The Decision
S4E6 / 06 Nov 1961Knight Errant
S4E7 / 13 Nov 1961Honest Abe
S4E8 / 20 Nov 1961The Long Goodbye
S4E9 / 27 Nov 1961The Shattered Idol
S4E10 / 04 Dec 1961Long Gun From Tucson
S4E11 / 11 Dec 1961The High Country
S4E12 / 18 Dec 1961A Friend in Need
S4E13 / 25 Dec 1961Skull
S4E14 / 01 Jan 1962The Princess
S4E15 / 08 Jan 1962
Gunfire
S4E16 / 15 Jan 1962The Quiet Fear
S4E17 / 22 Jan 1962
Sporting Chance
S4E18 / 29 Jan 1962
A Young Man's Fancy
S4E19 / 05 Feb 1962
The Man from Salinas
S4E20 / 12 Feb 1962
Two Ounces of Tin
S4E21 / 19 Feb 1962
Deadly Image
S4E22 / 26 Feb 1962
The Debt
S4E23 / 05 Mar 1962The Tinhorn
S4E24 / 12 Mar 1962None So Blind
S4E25 / 19 Mar 1962Jealous Man
S4E26 / 26 Mar 1962Guilty Conscience
S4E27 / 02 Apr 1962Day of Reckoning
S4E28 / 09 Apr 1962The Day the Town Slept
S4E29 / 16 Apr 1962Milly's Brother
S4E30 / 23 Apr 1962Outlaw's Shoes
S4E31 / 30 Apr 1962The Executioner
S4E32 / 07 May 1962
Season 5
Waste (1)
S5E1 / 01 Oct 1962
Waste (2)
S5E2 / 08 Oct 1962
Lou Mallory
S5E3 / 15 Oct 1962Quiet Night, Deadly Night
S5E4 / 22 Oct 1962Death Never Rides Alone
S5E5 / 29 Oct 1962I Take This Woman
S5E6 / 05 Nov 1962The Assailants
S5E7 / 12 Nov 1962Mark's Rifle
S5E8 / 19 Nov 1962The Most Amazing Man
S5E9 / 26 Nov 1962Squeeze Play
S5E10 / 03 Dec 1962Gun Shy
S5E11 / 10 Dec 1962The Anvil Chorus
S5E12 / 17 Dec 1962Conflict
S5E13 / 24 Dec 1962Incident at Line Shack Six
S5E14 / 07 Jan 1963Suspicion
S5E15 / 14 Jan 1963The Sidewinder
S5E16 / 21 Jan 1963The Sixteenth Cousin
S5E17 / 28 Jan 1962Hostages to Fortune
S5E18 / 04 Feb 1963And the Devil Makes Five
S5E19 / 11 Feb 1963End of the Hunt
S5E20 / 18 Feb 1963The Bullet
S5E21 / 25 Feb 1963Requiem at Mission Springs
S5E22 / 04 Mar 1963The Guest
S5E23 / 11 Mar 1963Old Man Running (aka The Wanted Man)
S5E24 / 18 Mar 1963Which Way'd They Go?
S5E25 / 01 Apr 1963Old Tony
S5E26 / 08 Apr 1963
Chuck Connors
Lucas McCain
Johnny Crawford
Mark McCain
