Season 4
(2005)
Overview
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.
Cast
as Sydney Bristow
as Michael Vaughn
as Jack Bristow
as Arvin Sloane
as Marcus Dixon
as Marshall Flinkman
as Eric Weiss
Episodes
Authorized Personnel Only (1) 7.4
January 5, 2005
Sydney quits the CIA and joins a Black Ops unit called "Authorized Personnel Only" alongside Dixon, Jack, Vaughn and...…
Authorized Personnel Only (2) 7.8
January 5, 2005
Sydney unwillingly teams up with her father to hunt down a modern-day samurai. Meanwhile, Nadia doesn't want to go back…
The Awful Truth 7.8
January 12, 2005
Sydney must seduce a murderous arms dealer in order to track down a stolen NSA code-breaker. Meanwhile, Vaughn fears fo…
Ice 7.6
January 19, 2005
Sydney and Vaughn go undercover to track down a deadly new bio-weapon. Meanwhile, Sydney is concerned about Vaughn not …
Welcome To Liberty Village 8.2
January 26, 2005
Sydney and Vaughn go undercover as a married couple so as to find a weapon that could bring back the Dark Ages. However…
Nocturne 7.6
February 9, 2005
After being infected with a hallucinogen, Sydney starts to lose touch with reality. Vaughn and Jack must rush to find a…
Détente 7.4
February 16, 2005
While Sydney and Nadia argue about Nadia's acceptance of Sloane's fatherly concerns, Sloane worries about Nadia's well-…
Echoes 7.6
February 23, 2005
Sloane temporarily steps down as Director of his Task Force and gives Jack full authority over the next assignment, whi…
A Man of His Word 7.6
March 2, 2005
While Nadia is in a coma, Sark is taken into APO to help them infiltrate Cadmus Revolutionary Front and retrieve the bo…
The Index 7.8
March 9, 2005
Dixon enlists Sydney to help him prove that Sloane is double-crossing the CIA and using APO to steal the Blackwell Inde…
The Road Home 7.4
March 16, 2005
Sydney must protect the life of a civilian, whom she unintentionally put in danger. Meanwhile, Jack plans a visit with …
The Orphan 7.2
March 23, 2005
Nadia puts her own life - as well Sydney's and Weiss's - in danger after failing to unveil her past through a dangerous…
Tuesday 7.8
March 30, 2005
When a mission goes wrong, Sydney's is placed in danger and Marshall is the only one who can save her. Meanwhile, Dixon…
Nightingale 7.8
April 6, 2005
Sydney and Vaughn risk their lives trying to find out the truth about Vaughn's father. Finally, we find out why Jack an…
Pandora 7.6
April 13, 2005
In an attempt to talk to Sydney, Katya Derevko deliberately poisons herself and is temporally taken out from her cell. …
Another Mister Sloane 7.6
April 20, 2005
Sydney and Vaughn tell Jack about Sloane's alleged involvement in Vaughn's search for his father and Irina's contract o…
A Clean Conscience 7.6
April 27, 2005
Nadia's former caretaker, Sophia, has been severely beaten. She contacts Nadia and asks to meet her. Sloane is told by …
Mirage 7.6
May 4, 2005
Jack's illness has caused him to hallucinate about a cure. Sydney must recreate the time when Jack was working for the …
In Dreams... 7.4
May 11, 2005
The team captures the Sloane Imposter and questions him to find a rare Rambaldi orchid. The real Sloane must relive a p…
The Descent 7.8
May 18, 2005
After a tactical group infiltrates the DSR and steals Rambaldi artifacts, CIA director Hayden Chase discovers that the …
Search and Rescue 7.6
May 18, 2005
Rambaldi's catastrophic endgame begins to fall into place as a giant version of the Circumference/Mueller device is fou…
Before the Flood 8.0
May 25, 2005
Jack, Sydney, Irina, Vaughn and Nadia parachute into Sovogda. They're supposed to dismantle a giant red ball turning pe…