The BEST Episodes of Alias
Every episode ever - ranked by fan votes!
Last Updated: Aug 26, 2020
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.
#1 - 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.
#2 - 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.
#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.
#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.
#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."
#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.
#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.
#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.
#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.
#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.
#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.
#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.
#13 - 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.
#14 - Search and Rescue
Season 4 - Episode 21 - Aired May 18, 2005
Rambaldi's catastrophic endgame begins to fall into place as a giant version of the Circumference/Mueller device is found floating over city in Russia, driving the citizens made. After a wounded Dixon reveals that Irina is alive, Sydney, Nadia, and Jack set off to find her. 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 is being held inside a camp in Tikal, safely in the clutches of Elena's army. Irina had apparently been working to counter Elena's organization, the Covenant, and actually PREVENT the Rambaldi endgame. Irina tells 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, the transport turns towards Russia, and Sydney, Vaughn, Jack, Nadia, and Irina parachute down, towards Elena, Sloane, the Circumference....and destiny.
#15 - 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.
#16 - 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.
#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.
#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.
#19 - 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.
#20 - No Hard Feelings
Season 5 - Episode 15 - Aired May 22, 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.
#21 - 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.
#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.
#23 - 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.
#24 - 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.
#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.