Season 4

The action explodes in the phenomenal fourth season when Sydney leaves the CIA to join a powerful new Black Ops unit, having no idea of the reunion in store for her.

Season episodes list 4

S04E01

S04E01 : Authorized Personnel Only (1) 7.68/10 (aired on 01/05/2005)

Sydney quits the CIA and joins a Black Ops unit called "Authorized Personnel Only" alongside Dixon,…
S04E02

S04E02 : Authorized Personnel Only (2) 7.76/10 (aired on 01/05/2005)

Sydney unwillingly teams up with her father to hunt down a modern-day samurai. Meanwhile, Nadia…
S04E03

S04E03 : The Awful Truth 7.57/10 (aired on 01/12/2005)

Sydney must seduce a murderous arms dealer in order to track down a stolen NSA code-breaker.…
S04E04

S04E04 : Ice 7.64/10 (aired on 01/19/2005)

Sydney and Vaughn go undercover to track down a deadly new bio-weapon. Meanwhile, Sydney is…
S04E05

S04E05 : Welcome to Liberty Village 7.9/10 (aired on 01/26/2005)

Sydney and Vaughn go undercover as a married couple so as to find a weapon that could bring back…
S04E06

S04E06 : Nocturne 7.57/10 (aired on 02/09/2005)

After being infected with a hallucinogen, Sydney starts to lose touch with reality. Vaughn and Jack…
S04E07

S04E07 : Détente 7.59/10 (aired on 02/16/2005)

While Sydney and Nadia argue about Nadia's acceptance of Sloane's fatherly concerns, Sloane worries…
S04E08

S04E08 : Echoes 7.46/10 (aired on 02/23/2005)

Sloane temporarily steps down as Director of his Task Force and gives Jack full authority over the…
S04E09

S04E09 : A Man of His Word 7.5/10 (aired on 03/02/2005)

While Nadia is in a coma, Sark is taken into APO and to help them infiltrate Cadmus Revolutionary…
S04E10

S04E10 : The Index 7.87/10 (aired on 03/09/2005)

Dixon enlists Sydney to help him prove that Sloane is double-crossing the CIA and using APO to…
S04E11

S04E11 : The Road Home 7.67/10 (aired on 03/16/2005)

Sydney must protect the life of a civilian, whom she unintentionally put in danger. Meanwhile, Jack…
S04E12

S04E12 : The Orphan 7.47/10 (aired on 03/23/2005)

Nadia puts her own life - as well Sydney's and Weiss's - in danger after failing to unveil her past…
S04E13

S04E13 : Tuesday 8.09/10 (aired on 03/30/2005)

When a mission goes wrong, Sydney's is placed in danger and Marshall is the only one who can save…
S04E14

S04E14 : Nightingale 7.64/10 (aired on 04/06/2005)

Sydney and Vaughn risk their lives trying to find out the truth about Vaughn's father. Finally, we…
S04E15

S04E15 : Pandora 7.87/10 (aired on 04/13/2005)

In an attempt to talk to Sydney, Katya Derevko deliberately poisons herself and is temporally taken…
S04E16

S04E16 : Another Mister Sloane 7.76/10 (aired on 04/20/2005)

Sydney and Vaughn tell Jack about Sloane's alleged involvement in Vaughn's search for his father…
S04E17

S04E17 : A Clean Conscience 7.64/10 (aired on 04/27/2005)

Nadia's former caretaker, Sophia, has been severely beaten. She contacts Nadia and asks to meet…
S04E18

S04E18 : Mirage 7.9/10 (aired on 05/04/2005)

Jack's illness has caused him to hallucinate about a cure. Sydney must recreate the time when Jack…
S04E19

S04E19 : In Dreams... 7.66/10 (aired on 05/11/2005)

The team captures the Sloane Imposter and questions him to find a rare Rambaldi orchid. The real…
S04E20

S04E20 : The Descent 7.8/10 (aired on 05/18/2005)

After a tactical group infiltrates the DSR and steals Rambaldi artifacts, CIA director Hayden Chase…
S04E21

S04E21 : Search and Rescue 8.12/10 (aired on 05/18/2005)

Rambaldi's catastrophic endgame begins to fall into place as a giant red ball version of the…
S04E22

S04E22 : Before the Flood 8.3/10 (aired on 05/25/2005)

Jack, Sydney, Irina, Vaughn and Nadia parachute into Sovogda. They're supposed to dismantle a giant…
  • banner
  • Original title

    Alias

  • Type

    TV series

  • Episodes

    5 Seasons • 105 Episodes

  • Rating

    7.29/10 (62 852 voting)

  • Popularity : 100%

  • Country of origin

    US

  • Original language(s)

    en

  • Running time

    60 : • 41 :

  • Status

    Ended