The BEST Episodes of Alias

Every episode ever - ranked by fan votes!

Last Updated: Dec 18, 2021

Network: ABC (US)

Sydney Bristow, an agent who has been tricked to believe she is working for the U.S. government is actually working for a criminal organization named the Alliance of Twelve. Upon learning this, Sydney becomes a double agent for the real CIA.

Watch Now

#1 - Resurrection

Season 3 - Episode 22 - Aired May 23, 2004

Lauren stages a stunning betrayal to steal classified materials from the CIA. Meanwhile, Vaughn comes face to face with his darkest demons in pursuit of his wife; Nadia must decide whether or not she can trust her father, Sloane, in the pursuit of Rambaldi's most priceless artifact; and Sydney receives a shattering revelation that will make her question everything - and everyone - she thought she could trust.

star 8.18
554 votes
Directors: Ken Olin
Writers: Jeff Pinkner
Maternal Instinct

#2 - Maternal Instinct

Season 5 - Episode 11 - Aired Apr 19, 2006

Sydney gives birth to the baby, but Sloane may need something from the newborn. Nadia awakens.

star 8.17
693 votes
Directors: Tucker Gates
Writers: Breen Frazier
All the Time in the World

#3 - All the Time in the World

Season 5 - Episode 17 - Aired May 22, 2006

Peyton tells Sloane that she has made a deal for the Rambaldi Sphere with an ally in China. Sloane arranges for stolen missiles to be sent to Hong Kong. Sloane's plan is revealed to the APO members, who race to stop him before he can use the Rambaldi Sphere to put the plan in motion. But this all leads to a long awaited confrontation between Sydney and Irina.

star 8.14
586 votes
Directors: Tucker Gates
Writers: Drew Goddard, Jeff Pinkner
Phase One

#4 - Phase One

Season 2 - Episode 13 - Aired Jan 26, 2003

Sydney and Jack are confronted by the new director of SD-6 who replaces Sloane, whose whereabouts and intentions are unknown. Meanwhile, romantic sparks begin to fly between Francie and Will.

star 8.12
671 votes
Directors: Jack Bender
Writers: J.J. Abrams
Almost Thirty Years

#5 - Almost Thirty Years

Season 1 - Episode 22 - Aired May 12, 2002

In order to save Will's life, Sydney and Vaughn must destroy a familiar looking Rambaldi device, while Jack makes a risky deal with Khasinau's representative, Mr. Sark. Meanwhile, the CIA believes that one of their own is a mole for "The Man"; the Alliance comes to a decision regarding the fate of Emily Sloane; Dixon's suspicions about Sydney intensify; and Sydney finds herself face-to-face with "The Man."

star 8.10
755 votes
Directors: J.J. Abrams
Writers: J.J. Abrams
Before the Flood

#6 - Before the Flood

Season 4 - Episode 22 - Aired May 25, 2005

Jack, Sydney, Irina, Vaughn and Nadia parachute into Sovogda. They're supposed to dismantle a giant red ball turning people into zombies. At APO, Marshall and Weiss use the Blackwell Index to blackmail the Russian minister into giving them the access codes to a Russian satellite, they discover that Elena is uplinking the satellite. A CIA agent, Brodien reminds them that the Rambaldi device is broadcasting a subaudible frequency that physiologically alters people who drink it and it is irreversible. Elena learns of the APO team's arrival.

star 8.07
609 votes
Writers: André Nemec, Josh Appelbaum
The Telling

#7 - The Telling

Season 2 - Episode 22 - Aired May 4, 2003

Sydney finally confronts her mother, who reveals her true motivation. Sloane, for his part, begins to execute his new grand plan and Will struggles to figure out who's behind his set-up.

star 8.04
783 votes
Directors: J.J. Abrams
Writers: J.J. Abrams
There's Only One Sydney Bristow

#8 - There's Only One Sydney Bristow

Season 5 - Episode 12 - Aired Apr 26, 2006

One month after the baby is born, Sydney is taking time off from work. Will is what pulls her back in the field while she's on maternity leave. The enemies realize that the best way to hurt Sydney is through her friends. Anna Espinosa also returns.

star 7.94
662 votes
Writers: Drew Goddard

#9 - Reprisal

Season 5 - Episode 16 - Aired May 22, 2006

In the first part of [the] Alias two-hour finale event, 'Reprisal,' Sloane takes Marshall and Rachel hostage in order to discover a crucial clue to Rambaldi's ultimate endgame, as Sydney, Vaughn and APO race to stop him.

star 7.91
626 votes
Writers: Alison Schapker, Monica Breen

#10 - Remnants

Season 3 - Episode 10 - Aired Dec 7, 2003

The identity of the mysterious "St. Aidan" forces Sydney to pull a stunned Will out of witness protection. But the pursuit sends the two old friends on a collision course with Allison -- the woman who ruined both their lives. Meanwhile, a zealous Lindsey arrests Jack and Vaughn as conspirators in Sydney's escape from NSC custody, Sloane, still under pressure from Lindsey, puts a plan in motion to eliminate Sydney, and Dr. Brezzel has an unpleasant run-in with Sark.

star 7.91
713 votes
Directors: Jack Bender
Writers: Jeff Pinkner
Breaking Point

#11 - Breaking Point

Season 3 - Episode 8 - Aired Nov 23, 2003

When Sydney is taken into custody by the NSC, Jack and Vaughn have no choice but to ally themselves with Sloane to rescue her. But with only hours to spare before she is forced to undergo a radical surgery to recover her memories, they must put togther an extraction team, headed by freelance operative Brill (Richard Roundtree, "Shaft"). Meanwhile, Lauren faces an impossible choice -- side with the NSC, who she wants to believe is doing the right thing, or with her husband.

star 7.88
775 votes
Directors: Daniel Attias
Writers: Breen Frazier
Truth Be Told

#12 - Truth Be Told

Season 1 - Episode 1 - Aired Sep 30, 2001

Sydney Bristow discovers that her job as an agent for SD-6, a top-secret division of the CIA, holds some deadly secrets that threaten the security of the free world. In spite of being warned against it, Sydney reveals her secret to her fiancé, Danny, who later on is murdered. Sydney finds that her father, Jack, is also SD-6 and that the group is not part of the CIA, but actually an enemy of the United States. Sydney seeks the aid of the real CIA and is enlisted as a double agent under the command of operations officer Vaughn. Her mission now is to complete her cases at SD-6 while reporting her findings back to the CIA. But when Sydney finds out that her father is also affiliated with the CIA, she begins to question where his true allegiances really lie.

star 7.87
1,825 votes
Directors: J.J. Abrams
Writers: J.J. Abrams
Search and Rescue

#13 - Search and Rescue

Season 4 - Episode 21 - Aired May 18, 2005

Rambaldi's catastrophic endgame begins to fall into place as a giant red ball version of the Circumference/Mueller device is found floating over a large city in Russia, driving the citizens mad with violence. After a wounded Dixon reveals that Irina is alive, Sydney, Nadia, and Jack set off to find her. It turns out that Irina had been captured, and then duplicated using Project Helix, in order to give the impression that she was dead. Sydney and Nadia discover Irina being held inside a camp in Tikal, safely in the clutches of Elena's private army. Irina had apparently been working to counter Elena's organization, the Covenant, and actually PREVENT the Rambaldi endgame. Irina is taken to APO and tells them of a page she destroyed, a page that was key to Rambaldi's endgame. Under torture, she finally broke and recreated it for Elena. After a short respite, Sydney, Vaughn, Jack, Nadia, and Irina board a plane parachute down, towards Elena, Sloane, the Circumference....and destiny.

star 7.86
583 votes
Writers: Alison Schapker, Monica Breen

#14 - Legacy

Season 3 - Episode 21 - Aired May 2, 2004

With the aid of Katya Derevko and CIA imprisoned security systems designer Toni Cummings, Sydney and Vaughn attempt to track down Sloane and Nadia. But Lauren and Sark are also in hot pursuit of them in order to uncover the secrets of Rambaldi. Meanwhile, Vaughn's obsession with tracking down Lauren is beginning to consume him, Sydney and Vaughn turn the tables on an old foe, and Katya expresses her attraction to Jack.

star 7.85
638 votes
Writers: Jesse Alexander
Full Disclosure

#15 - Full Disclosure

Season 3 - Episode 11 - Aired Jan 11, 2004

Sydney finally learns the shocking truth about her missing two years from an unlikely source.

star 7.84
715 votes
Writers: Jesse Alexander

#16 - Rendezvous

Season 1 - Episode 21 - Aired May 5, 2002

Will's life is about to change as he is sent to find the person responsible for leaking information to him about SD-6. Meanwhile, Sloane finds himself on the cusp of finally tracking down Khasinau when SD-6 captures "The Man's" right-hand man, Mr. Sark. Dixon becomes suspicious of Sydney's activities.

star 7.83
695 votes
Directors: Ken Olin
Writers: Debra J. Fisher, Erica Messer
The Enemy Walks In

#17 - The Enemy Walks In

Season 2 - Episode 1 - Aired Sep 29, 2002

Sydney finds herself face-to-face with her mother, whose intentions for her daughter are made chillingly clear. Meanwhile Sydney continues her search for Vaughn, not knowing if he is dead or alive after being swept away by a wall of water in Taipei. Will's life is forever changed when he learns the truth about SD-6 and Sydney's life as a double agent. Dixon must decide whether or not to inform Sloane of Sydney's suspicious activities.

star 7.82
756 votes
Directors: Ken Olin
Writers: J.J. Abrams

#18 - Crossings

Season 3 - Episode 12 - Aired Jan 18, 2004

Jack contacts a mysterious woman with ties to Irina to help him free Sydney and Vaughn, who have been captured and face a North Korean firing squad. But Jack is faced with a curious conundrum when the woman tells him that she will not put the rescue plan in motion until he fulfills a favor - assassinate Sloane.

star 7.81
733 votes
Directors: Ken Olin
Writers: André Nemec, Josh Appelbaum
Passage (2)

#19 - Passage (2)

Season 2 - Episode 9 - Aired Dec 8, 2002

While continuing on a mission to take control of six nuclear warheads, Sydney and Jack discover where Irina's loyalties lie when she meets up with Gerard Cuvee. Meanwhile, Sloane informs the Alliance that Emily may still be alive.

star 7.81
704 votes
Directors: Ken Olin
Writers: Crystal Nix Hines

#20 - Tuesday

Season 4 - Episode 13 - Aired Mar 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 is exposed to a deadly pathogen released inside APO.

star 7.80
561 votes
Writers: Breen Frazier, Drew Goddard
No Hard Feelings

#21 - No Hard Feelings

Season 5 - Episode 15 - Aired May 17, 2006

Sydney now posing as Anna, brings Peyton a microchip with a device hidden in it. Meanwhile Sloane finishes translating page 47 and reports that only the chosen one can complete the circle, which leads Sark and Sydney on a dangerous mission to a prison. Rachel finally discovers Tom's secret about what happened to his wife.

star 7.80
593 votes
Directors: Tucker Gates
Writers: Sam Humphrey
The Counteragent

#22 - The Counteragent

Season 2 - Episode 7 - Aired Nov 17, 2002

Sydney races to find a cure for Vaughn, but in order to find the antidote, Sydney must make a deal with Sark that could endanger Sloane's life. Meanwhile, Will continues his research for Vaughn and discovers some disturbing inconsistencies involving 20-year-old standardized IQ tests.

star 7.79
613 votes
Directors: Daniel Attias
Writers: John Eisendrath

#23 - Prelude

Season 3 - Episode 7 - Aired Nov 9, 2003

Jack takes drastic measures to ensure that the NSC never finds out the truth about Sydney's murder of a Russian diplomat. But his actions place a heavy strain on Vaughn's marriage, as Lauren gets closer and closer to the truth about Sydney. Meanwhile, Sydney agrees to go on a mission with Sloane in order to thwart plans to obtain the operating system to a deadly weapon -- and she discovers an unlikely ally in the hunt for her missing two years.

star 7.79
737 votes
Directors: Jack Bender
Writers: J.R. Orci

#24 - S.O.S.

Season 5 - Episode 10 - Aired Apr 19, 2006

The entire APO gang is trapped inside the CIA offices and Weiss saves them. However, Weiss will not be returning to APO, he will just be helping the others on a mission to obtain information regarding Sydney.

star 7.77
666 votes
Directors: Karen Gaviola
Writers: J.R. Orci
The Horizon

#25 - The Horizon

Season 5 - Episode 9 - Aired Dec 14, 2005

Sydney teams up with Vaughn after being kidnapped and being placed in a hypnotic. What Sydney doesn't know is that the kidnapper is a very familiar face with an obscure interest in her unborn child.

star 7.76
719 votes
Directors: Tucker Gates
Writers: André Nemec, Josh Applebaum
Want to see where all 105 episodes of Alias rank?
Join Episode Ninja Pro
$5 monthly/$50 annually