Alias - 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.

22 Episodes

Authorized Personnel Only (1)

Season 4 - Episode 1

Sydney quits the CIA and joins a Black Ops unit called "Authorized Personnel Only" alongside Dixon, Jack, Vaughn and... Sloane. Meanwhile, t...

Authorized Personnel Only (2)

Season 4 - Episode 2

Sydney unwillingly teams up with her father to hunt down a modern-day samurai. Meanwhile, Nadia doesn't want to go back to the spy business,...

The Awful Truth

Season 4 - Episode 3

Sydney must seduce a murderous arms dealer in order to track down a stolen NSA code-breaker. Meanwhile, Vaughn fears for Weiss's life, and S...

Ice

Season 4 - Episode 4

Sydney and Vaughn go undercover to track down a deadly new bio-weapon. Meanwhile, Sydney is concerned about Vaughn not having yet put Lauren...

Welcome To Liberty Village

Season 4 - Episode 5

Sydney and Vaughn go undercover as a married couple so as to find a weapon that could bring back the Dark Ages. However, the neighborhood th...

Nocturne

Season 4 - Episode 6

After being infected with a hallucinogen, Sydney starts to lose touch with reality. Vaughn and Jack must rush to find an antidote before Syd...

Détente

Season 4 - Episode 7

While Sydney and Nadia argue about Nadia's acceptance of Sloane's fatherly concerns, Sloane worries about Nadia's well-being when she and Sy...

Echoes

Season 4 - Episode 8

Sloane temporarily steps down as Director of his Task Force and gives Jack full authority over the next assignment, which involves Anna Espi...

A Man of His Word

Season 4 - Episode 9

While Nadia is in a coma, Sark is taken into APO to help them infiltrate Cadmus Revolutionary Front and retrieve the bomb, but in return he ...

The Index

Season 4 - Episode 10

Dixon enlists Sydney to help him prove that Sloane is double-crossing the CIA and using APO to steal the Blackwell Index, a master blackmail...

The Road Home

Season 4 - Episode 11

Sydney must protect the life of a civilian, whom she unintentionally put in danger. Meanwhile, Jack plans a visit with an old friend, and Va...

The Orphan

Season 4 - Episode 12

Nadia puts her own life - as well Sydney's and Weiss's - in danger after failing to unveil her past through a dangerous criminal. Meanwhile,...

Tuesday

Season 4 - Episode 13

When a mission goes wrong, Sydney's is placed in danger and Marshall is the only one who can save her. Meanwhile, Dixon is exposed to a dead...

Nightingale

Season 4 - Episode 14

Sydney and Vaughn risk their lives trying to find out the truth about Vaughn's father. Finally, we find out why Jack and Sloane seem to be c...

Pandora

Season 4 - Episode 15

In an attempt to talk to Sydney, Katya Derevko deliberately poisons herself and is temporally taken out from her cell. Once Nadia tells her ...

Another Mister Sloane

Season 4 - Episode 16

Sydney and Vaughn tell Jack about Sloane's alleged involvement in Vaughn's search for his father and Irina's contract on Sydney's life. Afte...

A Clean Conscience

Season 4 - Episode 17

Nadia's former caretaker, Sophia, has been severely beaten. She contacts Nadia and asks to meet her. Sloane is told by Sophia that she was b...

Mirage

Season 4 - Episode 18

Jack's illness has caused him to hallucinate about a cure. Sydney must recreate the time when Jack was working for the CIA and hid the only ...

In Dreams...

Season 4 - Episode 19

The team captures the Sloane Imposter and questions him to find a rare Rambaldi orchid. The real Sloane must relive a painful memory in orde...

The Descent

Season 4 - Episode 20

After a tactical group infiltrates the DSR and steals Rambaldi artifacts, CIA director Hayden Chase discovers that the alarms at the DSR wer...

Search and Rescue

Season 4 - Episode 21

Rambaldi's catastrophic endgame begins to fall into place as a giant version of the Circumference/Mueller device is found floating over city...

Before the Flood

Season 4 - Episode 22

Jack, Sydney, Irina, Vaughn and Nadia parachute into Sovogda. They're supposed to dismantle a giant red ball turning people into zombies. At...