| Season Episode: 4x01 |
| Episode: 67 |
| Production Number: 4ADH01 |
| Original Air Date: 2002-10-06 |
| Title: Deep Down |
| |
| Season Episode: 4x02 |
| Episode: 68 |
| Production Number: 4ADH02 |
| Original Air Date: 2002-10-13 |
| Title: Ground State |
| |
| Season Episode: 4x03 |
| Episode: 69 |
| Production Number: 4ADH03 |
| Original Air Date: 2002-10-20 |
| Title: The House Always Wins |
| |
| |
| Season Episode: 4x05 |
| Episode: 71 |
| Production Number: 4ADH05 |
| Original Air Date: 2002-11-03 |
| Title: Supersymmetry |
| |
| Season Episode: 4x06 |
| Episode: 72 |
| Production Number: 4ADH06 |
| Original Air Date: 2002-11-10 |
| Title: Spin the Bottle |
| |
| Season Episode: 4x07 |
| Episode: 73 |
| Production Number: 4ADH07 |
| Original Air Date: 2002-11-17 |
| Title: Apocalypse, Nowish |
| |
| Season Episode: 4x08 |
| Episode: 74 |
| Production Number: 4ADH08 |
| Original Air Date: 2003-01-15 |
| Title: Habeas Corpses |
| |
| Season Episode: 4x09 |
| Episode: 75 |
| Production Number: 4ADH09 |
| Original Air Date: 2003-01-22 |
| Title: Long Day's Journey |
| |
| Season Episode: 4x10 |
| Episode: 76 |
| Production Number: 4ADH10 |
| Original Air Date: 2003-01-29 |
| Title: Awakening |
| |
| Season Episode: 4x11 |
| Episode: 77 |
| Production Number: 4ADH11 |
| Original Air Date: 2003-02-05 |
| Title: Soulless |
| |
| Season Episode: 4x12 |
| Episode: 78 |
| Production Number: 4ADH12 |
| Original Air Date: 2003-02-12 |
| Title: Calvary |
| |
| Season Episode: 4x13 |
| Episode: 79 |
| Production Number: 4ADH13 |
| Original Air Date: 2003-03-05 |
| Title: Salvage |
| |
| Season Episode: 4x14 |
| Episode: 80 |
| Production Number: 4ADH14 |
| Original Air Date: 2003-03-12 |
| Title: Release |
| |
| Season Episode: 4x15 |
| Episode: 81 |
| Production Number: 4ADH15 |
| Original Air Date: 2003-03-19 |
| Title: Orpheus |
| |
| Season Episode: 4x16 |
| Episode: 82 |
| Production Number: 4ADH16 |
| Original Air Date: 2003-03-26 |
| Title: Players |
| |
| Season Episode: 4x17 |
| Episode: 83 |
| Production Number: 4ADH17 |
| Original Air Date: 2003-04-02 |
| Title: Inside Out |
| |
| Season Episode: 4x18 |
| Episode: 84 |
| Production Number: 4ADH18 |
| Original Air Date: 2003-04-09 |
| Title: Shiny Happy People |
| |
| Season Episode: 4x19 |
| Episode: 85 |
| Production Number: 4ADH19 |
| Original Air Date: 2003-04-16 |
| Title: The Magic Bullet |
| |
| Season Episode: 4x20 |
| Episode: 86 |
| Production Number: 4ADH20 |
| Original Air Date: 2003-04-23 |
| Title: Sacrifice |
| |
| Season Episode: 4x21 |
| Episode: 87 |
| Production Number: 4ADH21 |
| Original Air Date: 2003-04-30 |
| Title: Peace Out |
| |
| Season Episode: 4x22 |
| Episode: 88 |
| Production Number: 4ADH22 |
| Original Air Date: 2003-05-07 |
| Title: Home |
| |
