How Many Episodes Of "Alias" Have You Seen?

On her first mission as a double agent, Sydney is sent to Moscow to retrieve some stolen files about nuclear bomb. Meanwhile, Will continues to grow obsessed with Danny's death and starts his own investigation even though Sydney asked him not to.

Sydney and Dixon are sent on a dangerous case involving the safety of the United Commerce Organization. Francie gets suspicious about Charlie and spies on him. Meanwhile, Will continues to investigate the truth about Danny's murder.

Sydney goes undercover in a mental institution to meet a man programmed to be an assassin. Meanwhile, back home in LA, Will discovers the true identity of "Kate Jones" and Francie learns the truth about Charlie.

Sydney must undergo an extensive lie detector test to prove her loyalty to SD-6 while at the same time she is trying to find connection between a 500 year old Rambaldi sketch and a machine. In the meantime, Will gets deeper into the secrets while investigating Danny's death.

After she manages to escape a certain death at SD-6 and still manages to maintain her cover as double agent, Sydney is sent on a private island to find new identity of Ineni Hassan, an ex weapon smuggler and previous head of weapons resources of SD-6. Things go south for Sydney after she discovers that Jack got into trouble on a mission in Cuba, and in the meantime, Will Tippin focuses his investigation on SD-6, whose name he heard for the first time thanks to the bug from Eloise Kurtz.

When former SD-6 agent McKenas Cole with his crew of bandits take over SD-6, Sydney has to forget her previous plan about quitting the agency and has to focus on her mission with Jack to save their colleagues. In the meantime, as he was about to quit his work on a story, Will Tippin gets an unexpected push to continue from the third party.

After the SD-6 finds out that another terrorist organisation was attacked at the same time as them, Sydney and Dixon are sent to Las Vegas, and later Moscow, to try to find something that will bring SD-6 closer to identity of The Man. All in the same time, Sydney learns some shocking news about Francie's fiancé, Jack tries to be a better father to Sydney and Will begins his journey in discovering SD-6.

Department of Special Research gained interest in Sydney's role involving the page 47 and they began their own investigation regarding it. To save herself, Sydney needs to steal 500 year old Rambaldi codes from Vatican to decipher Rambaldi's prophecy. Meanwhile. Sloane gets suspicious that one of the Alliance's members switched sides and is now working with The Man.

After she managed to prove her innocence to FBI, Sydney is sent to Vienna to retrieve data from SD-6 spy in Russian Embassy. There she runs into Noah Hicks, her ex who broke her heart and left her without a word few years earlier. Meanwhile, Sloane promises Sydney to help her find her mother and Jack is losing his mind because of it.

Francie is having a rat problem in her house and gives an inspiring speech about catching them which gives Sydney idea how to catch Khasinau. She and Vaughn set up fake transaction for a Rambaldi artifact with Sark, but their job is compromised when Sloane sends SD-6 agents to steal the presumed second vial. Meanwhile, Will learns the truth about his kidnapping and Jack Bristow has no option but to help him.

Sloane must take a difficult decision in order to get to the Alliance's council. After being captured by Sark, Tippin is tortured by a Taiwanese would-be dentist to extract secrets. Sydney, who has to beware her colleague Dixon, assist her father trying to save Tippin. However, after losing Vaughn when the lab exploded, she is in for a surprise...

After turning herself in to the CIA, Irina won't communicate with anyone - except her daughter. Sydney refuses to cooperate, until a mission goes awry and crucial information falls into the wrong hands. Now, against Jack's wishes, Sydney must face Irina and find out what She knows.

Past demons revisit all the characters as Sloane becomes confused and desperate over clues that his wife may not be dead. At the same time, Will meets a woman who claims to know the truth about SD-6. And Jack tries to convince Sydney that Irina is setting the stage to betray them and will go to any lengths to prove it.

Sydney's fury at Jack's present betrayal and past sins leads her father to a desperate act to prove his love for her. Meanwhile, Vaughn - after enlisting Will in a seemingly benign CIA request - learns that a mission He and Sydney engaged in could have disastrous consequences for their health.

Sark's alliance with SD-6 suddenly puts Sydney at risk of being exposed as a double agent. She has no choice but to cooperate with his plan, until his alliance with Sloane sends several nuclear weapons into the wrong hands. Now, only Irina holds the key to unraveling Sark's agenda - and She refuses to cooperate.

Backed into a corner, Sark cuts a desperate deal Sloane using Sydney to recover a state-of-the-art surveillance system. But when the plan goes awry, SD-6 sends Marshall with Sydney on her next mission... giving the CIA no choice but to extract the op-tech specialist. Now Sydney faces the consequences of "waking up" Marshall - and possibly destroying his life in the process.

Sydney and Vaughn reach a crossroads as they try to turn a professional relationship into a personal one during a mission to recover an experimental gyroscope. Meanwhile, Jack struggles to outwit the persistent SD-6 security expert, Ariana Kane, as she tightens the noose of suspicion around him of being Sloan's blackmailer.

When a young CIA agent dies, suspicion immediately falls on her parter and lover, agent Jim Lennox. But after Sydney rescues Lennox from captivity, She trikes up an instant connection as they discover shared wounds - realizing They've both lost someone they love to the job. Yet even her judgment is thrown when Vaughn and Jack discover that Lennox was pursing a technology that allows people to change their appearance. Now Sydney must ask herself: is this the real Jim Lennox - or is his double?

When Sloane gets his hands on a terrifying Rimbaldi weapon that causes internal spontaneous combustion, Sydney must turn to a betrayed and hurt Dixon for help. But when her ex-partner refuses any assistance, She has no choice but to carry out the mission herself. When Sydney is captured, Vaughn must persuade Dixon to help the CIA rescue Sydney from an Afghan warlord's camp.

Following her betrayal, the CIA try desperately to track down Irina Derevko. Their trail on Derevko leads them to Stuttgart and closer to Sark and Sloane, even as Sloane contemplates giving up his quest to complete Rambaldi's work in order to stay with his wife, Emily.

As Dixon struggles with the death of his wife, He refuses to take time off from work until Sloane is brought to justice. But Sydney worries that Dixon's repressed rage could cause more harm that anything Sloane could do.

Sydney must confront her mother, who tells a clue about "some Rambaldi artifacts" in Zurich, but it was a trap to capture Jack. As Sloane keeps Jack hostage, Vaughn and Sydney go to Stockholm to capture Sark, who reveals the hideout in Mexico City. Meanwhile, Tippin discovers that Francie is in fact a "double" and is the one who framed him...

Sydney's search for her past leads to an imprisoned Sark, but their Q&A is cut short when he becomes the ransom for a pair of abducted CIA scientists by the Covenant, whose kidnappers may be tied to the murder of his father. Meanwhile, Jack contacts an old friend of sorts for info on Sloane's new world-peace project in Switzerland. Also, Vaughn makes a decision about his future as an operative for the CIA.

Sydney discovers a link to her missing two years in the form of Simon Walker, the dangerous leader of a group determined on retrieving deadly biological weapons. Meanwhile, Vaughn struggles with his own feelings of jealousy and longing while Sydney is on her mission, aware of the pressures his job is putting on his marriage to Lauren. Jack takes matters into his own hands to protect his daughter, and purposefully revealing Sydney's deadly secret of being a brainwashed assassin for the Covenant during her two-year absence to Dixon in order to preserve her position inside the CIA.

Sydney's emotions are turned inside-out when she once again comes face-to-face with Allison Doren, the murdered Francie's doppelgänger, who was presumed dead but is now a key assassin working for the Covenant. Meanwhile Lauren's search for Lazarey's murderer leads her closer to discovering the connection to Sydney, and Sydney begrudgingly is assigned as Sloane's CIA handler.

When Sydney is taken into custody by the NSC honcho Mr. Lindsey, 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 together an extraction team, headed by freelance operative Brill. Meanwhile, Lauren faces an impossible choice: side with the NSC who she wants to believe is doing the right thing, or with her husband in their rescue of Sydney.

The identity of the mysterious "St. Aidan" forces Sydney to pull a stunned Will Tippin out of witness protection for help in finding Lazarey to clear her name. But the pursuit sends the two old friends on a collision course with Allison, the Francie impostor who ruined both their lives. Meanwhile, a jealous 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 whom is also looking for Sydney.

Jack contacts a mysterious woman, that of former KGB agent Katya Derevko, Irina's older sister, to help him free Sydney and Vaughn, whose plane has crashed inside North Korea while seeking to find a defecting Russian scientist, named Leonid Lisenker, whom Sark is trying to kill before turning himself to the CIA. But Jack is faced with a curious conundrum when Katya tells him that she will not put the rescue plan in motion until he fulfills a favor: assassinate Sloane.

While trying to retrieve a bomb, Sydney and Vaughn are ambushed by unidentified assailants. Meanwhile, Lauren and Sark continue to solidify their new partnership as the new leaders of the Covenant. Sloane divulges a dark secret to CIA therapist Dr. Judy Barnett about his past involving Sydney and Irina Derevko. Also, Marshall shows the strains of new fatherhood.

Sydney attempts to rescue Dixon's kids after they are kidnapped by Sark. Meanwhile, Lauren's status as a double agent for the CIA and the Covenant is put to the test when she learns that she has to work with her father; a wealthy U.S. Senator. When Laura's position is compromised, she and Sark decide to frame Sloane for being the CIA mole.

Sydney and Jack warn a disbelieving Vaughn about their suspicions of Lauren being the CIA mole. Meanwhile, Kazari Bomani and Sark take possession of the Rambaldi machine as part of their greater master plan. Sydney and Vaughn must stop a Covenant virus that's crippling medical facilities around the world. Sloane's secret of being Sydney's biological father is revealed to Jack, and Bomani begins to lose faith in Lauren's ability to carry out her Covenant missions.

After finally discovering the identity of the Rambaldi "Passenger," who is Sloane's illegitimate daughter, Sydney and Jack seek the aid of Sloane, to track the "Passenger" down, first by Sloane meeting with the five key members of a secret government group called "The Trust" to gain access to a Rambaldi device to locate the "Passenger". Sydney then travels to Chechnya to a prison where she finally finds her half-sister, Nadia Santos, an Argentine national and secret agent in hiding. Meanwhile, after learning a secret about his father from Thomas Brill, Vaughn is kidnapped and tortured by Lauren and Sark, who are about to track "The Passenger" down themselves while Dixon, Weiss and Marshall race against the clock to find Vaughn before he is killed.

Lauren stages a stunning betrayal by impersonating Sydney and blowing up the CIA offices to steal classified materials, and nearly killing Marshall in the process. But Sark is captured during Lauren's escape, and Sydney decides to play the impersonating game herself to learn where Laura is heading off too. Meanwhile, Vaughn comes face to face with his darkest demons in pursuit of his traitorous wife. Nadia must decide whether or not she can trust her father, Sloane, in the pursuit of Rambaldi's most priceless artifact and escape from CIA custody. During a mission to South Africa at a Rimbaldi artifact dig, Sydney has a some help and hindrance from Katya Derevko, as well as a final one-on-one fight with Lauren. Afterwards, Sydney receives a shattering revelation from Lauren that will make her question everything (and everyone) she thought she could trust.

Sydney unwillingly teams up with her father to hunt down a modern-day samurai, named Kazu Tamazaki. Meanwhile, Nadia is back home in Argentina and refuses to go back into the spy business. But she is forced to when Sydney's life is jeopardized when she's taken captive by the brutal Tamazaki. Sydney finds out the reason behind Jack's misdeed and Nadia makes an unsettling promise to Sydney to find out who murdered Irina.

Sydney and Vaughn go undercover to track down a deadly new bio-weapon. Meanwhile, Sydney is concerned about Vaughn not having yet put Lauren behind, and Nadia turns to a Jack to ask for his help in finding out the truth about her mother's murder, who tries to throw Nadia away from the evidence pointing to him.

When Sydney gets bitten on the neck by a missing in action CIA agent, she soon finds out that she has been infected by a experiential hallucinogen, causing her to slowly lose touch with reality. Vaughn and Jack must race against the clock to find an antidote before Sydney puts her life (and others next to her) into danger.

Sloane temporarily steps down as director of his APO task force and gives Jack full authority over the next assignment, which involves Anna Espinosa, the former K-Directorate assassin and Sydney's old foe into racing her to go after stolen classified documents. However, Anna turns the tables on APO when she captures Nadia and forces Sydney to do her bidding. During this time, Sydney tells Nadia about the Rambaldi's prophecy which dictates that "two sisters will fight, and only one will survive." Meanwhile, Vaughn visits the imprisoned Sark and tries to trick him into helping them to catch Anna.

Dixon secretly enlists Sydney to help him prove that Sloane is double-crossing the CIA and using APO to steal the Blackwell Index, a master blackmail list, and to reconstruct the Alliance of Twelve. Sydney makes her way into Sloane's house so as to copy the encryption key from his secure phone and crack his phone calls. When Nadia finds Sydney snooping around Sloane's computer, she doesn't tell him, but becomes disappointed in her sister and begins to lose trust with Sydney. Meanwhile, Vaughn discovers something disturbing about his late father when he visits his comatose, dying uncle who makes a remark about seeing his father - recently.

Nadia puts her own life (as well Sydney's and Weiss's) in danger after failing to unveil her past about her involvement with a dangerous criminal, named Ceasar Martinez from her home in Argentina whom recruited her as an assassin for his gang and wants to relive old times. Meanwhile, Vaughn finds a person who is somehow connected to his father and Nadia as well.

Vaughn and Sydney, searches for Vaughns father, and the word Nightingale. Getting help from her father, telling him that Vaughns father might still be alive. Jack Bristow and Sloane have their own agenda. Following Jack Intel, Sydney and Vaughn goes to Munich. Dressed as a German beer maid, Sydney roughly pursued an investment banker to give her information. They find out that Nightingale is still an active experiment, in an atomic plant in Siberia. They go on a mission to the plant. Which turns out to be very dangerous for both Sydney and her father.

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. After cornering Sloane, they both conclude that someone is framing him. The APO team set a trap to catch the fake A. Sloane, but they fail. Once they realize what "Arvin Clone" is after, Sloane suggests to step down, temporarily. However, Sydney reluctantly convinces him to stay on the case, since he may the only person able to anticipate "Arvin Clone"'s next move. But Nadia fears that this pursuit may revive her father's past obsession: Rambaldi.

Jack's illness has caused him to hallucinate about a cure among other things. As a result, Sydney must recreate the time when Jack was working for the CIA and hid the only man who might be able to help him now. For this, Sydney must role play her own mother. Meanwhile, Sophia moves in with Sydney and Nadia.

After a tactical group infiltrates the DSR and steals all the Rambaldi artifacts, CIA director Hayden Chase discovers that the alarms at the DSR were disabled from Nadia's computer, allowing the raid to happen. Mrs. Chase shows up at the apartment to question her. Soon Sloane and Jack arrive and suspect that Sophia, who had access to the computer while she was living with Sydney and Nadia, is in fact Elena Derevko. They follow her trail to a dead Rambaldi follower, a stunning betrayal, and a presumed dead family member when in a surprising twist, Sydney and Nadia learn that Irina Derevko is in fact alive.

Jack, Sydney, Irina, Vaughn and Nadia parachute into Sovogda, Russa to dismantle the giant floating red ball of the Circumfrence which is turning people into mindless, red-eyed zombies out to kill. Back at APO, Marshall and Weiss try use the Blackwell Index to blackmail the Russian defense minister into giving them the access codes to a Russian satellite before the local authorities plan to drop a nuclear bomb on the city to destroy it and prevent the spread of the contagion, and they also discover that Elena is up linking the satellite. In the ruins of the city, a CIA agent, Brodien (the one whom Sydney rescued from Shanghai in the season opener) reminds them that the Rambaldi device is broadcasting a sub audible frequency that physiologically alters people who drink the water-like fluid that has infected the city's water supply and it is irreversible. At the same time, Elena learns of the APO team's arrival and sends Sloane and her men to go out to kill them, leading to a three-way war between Elena's henchman, the APO group, and the zombies leading to Nadia becoming infecting and having a final one-on-one confrontation with Sydney atop a building with the red ball Circumference in the balance.

Four months after Vaughn's murder by the traitorous Gordon Dean and his associate Ivan Curtis, a grief-stricken Sydney teams up with Renée Rienne, a French freelance assassin and fugitive on the CIA's most wanted list who knew Vaughn from their past association with Prophet Five, to ask for leads in order to track down the killers before they can strike again. Meanwhile, Jack enlists a reluctant new agent, Thomas Grace, as Vaughn's replacement at APO, and Weiss struggles to decide whether or not to accept a promotion that would force him to move to Washington D.C. and leave his colleagues at APO. During this time, Sydney, Dixon and Weiss travel to Amsterdam to track down Curtis who is in the process of buying a potential weapon.

While Sloane awaits the outcome of his sentencing for treason, a mysterious associate of Gordon Dean approaches him for a favor in exchange for persuading the judges to rule in favor of acquittal. Meanwhile, Sydney and Tom must try to convince Rachel to help them catch the fugitive Gordon Dean who moves his operations to more secure locations. Sydney and Rachel return to the ruins of the Shed's offices in Prague for Rachel to reconstruction Dean's computer server so Tom and Dixon in the Cayman Islands can empty out Dean's bank accounts. Although they are successful, Dean discovers that Rachel is still alive which puts both her and Sydney in grave danger when they are trapped in a car that's hanging by an electromagnet controlled by Dean and his lethal associate Peyton who threaten to drop the hovering car unless Rachel's location is revealed.

After Sydney and the APO team infiltrates a formal party at the Chinese embassy in India to locate a fugitive arms dealer, named Janos Vak, Rachel is chosen to begin very first solo mission by infiltrating an off-shore oil platform, with com-links from Sydney whose pregnancy now limits her role in missions, to steal some computer software from Janos to gain the location of a new weapon. Meanwhile, Sloan, now back at APO, is in frequent contact with the elusive Gordon Dean who wants him to keep close tabs on APO, leading to Dean sending his lethal right-hand assassin, Kelly Peyton, to recover the computer software before APO does leading to a hand-to-hand fight between Peyton and the field-inexperienced Rachel.

An incident concerning a microwave bomb brings APO to send Rachel in Sao Paolo in order to take information about this weapon. However, another person who is named "Bob" is also after this information. Rachel has a fling with him, but back at APO, she finds out that he is Julian Sark. Meanwhile, Jack and an old friend are caught by Lazaré while on a stalking mission. Knowing Rachel has a clue to meet Stark, Sydney must deal with this foe in order to free her father from the hands of Lazaré in Tunisia...

After escaping from Peyton and her henchmen, and learning she's on a freighter at sea, Sydney goes to the communications room and sends a message to APO routed through the CIA to her whereabouts. Unbeknownst to her, the message is intercepted by a mole at the CIA working for Prophet Five, although APO was able to obtain a piece of the transmission. Wanting to retrieve Sydney, the APO team, Rachel, Tom, Dixon, and Marshall attempt to break into a secured server room located at Langley with the goal of obtaining the remaining part of the transmission. Problems arise, however, when APO is forced to take the hard drive, which triggers an alarm. They manage to escape the situation thanks to former APO agent Eric Weiss who aids them in sneaking past the guards. Although the transmission on the hard drive is corrupted, APO is able to learn who corrupted it. Jack sets a meeting up with the division heads of the CIA and is quickly able to identify the mole. Meanwhile, Tom is revealed to have another agenda when he obtains information about a certain Allan Korman, who was a former German assassin now in a witness relocation program, and who murdered Tom's wife many years earlier.

One month later, with Sydney on maternity leave, she gets forced back into the field when her old enemy, Anna Espinosa, returns after she's secretly sprung from prison by Peyton who gives her a job offer to work for Prophet Five whose leaders have secretly contact with Sloan to get him to set up Sydney in exchange for getting the cure for Nadia. Anna decides that to get at Sydney is that she needs to go through her friends, leading to Anna to abduct Will Tippen. Sydney, along with APO, is forced to try to find Anna and save Will before he's killed unaware that Prophet Five has bigger plans for Syd, to take a sample of her DNA.

Visions trouble Sloane while he works for Prophet Five in deciphering the Rimbaldi Page 47 artifact. Meanwhile, a computer chip is found in the dead Renée's body leading Sydney to try to make contact with Vaughn.

Sloane takes Rachel and Marshall hostage to force them to help him find the Rambaldi clue that he is missing. Sydney, Vaughn and APO try to save them by having Marshall's wife, Carrie, to help out, while Sloan plots with Sark and Peyton to take over Prophet Five for themselves.