Gasping for air, SD-6 agent Sydney Bristow is being held face down in a sink filled with water. Two Asian henchmen throw her to the ground and handcuff her to a chair. Sydney hears only the sounds of a door in the dingy room slowly opening…to who or what, she does not know.

Sydney learns SD-6 is far larger and more powerful than she could imagine. Will uncovers his first mysterious clue into the murder of Sydney’s fiancé.

Sydney follows a trail of artifacts from the ancient philosopher Milo Rambaldi and finds herself face-to-face with her archenemy, Anna Espinosa. Will’s investigation into Daniel Hecht’ s death leads him to believe he has stumbled into something much larger than a random homicide.

Sydney must prevent a terrorist attack on the United Commerce Organization. Francie suspects her boyfriend is cheating, while Will continues to unravel the mystery of the murder of Sydney’s fiancé.

Sydney’s life is in jeopardy when Agent Sloane suspects that a man in SD-6’s possession is an imposter. Mysteries of the past further unravel for Will and Sydney when Will discovers more clues into Daniel Hecht’s murder and Sydney receives new information on her father’s past.

Sydney uncovers information on her father’s past while she carries out missions in London and Bucharest for SD-6.

Sydney helps a former SD-6 agent uncover his forgotten past and learns something horrible about her own past in the process.

The mystery around ancient prophet Milo Rambaldi grows just as Sloane’s suspicions that Sydney and/or her father Jack may be moles increases.

Sydney’ s status as a mole is nearly exposed by Agent Sloane during a mission. Will finds more than he bargained for in Eloise Kurtz’s car.

Sydney narrowly escapes Sloane’ s suspicions and her execution. Jack puts his own life on the line to save his daughter. Will stumbles upon the word “SD-6” for the first time.

Sydney is shocked to discover that Jack’s past may have included being a deadly assassin assigned to eliminate agents of the CIA.

Director/Producer/Writer/Actor Quentin Tarantino guest stars as the leader of a rogue organization who takes over SD-6 and holds its members hostage.

With SD-6 at his command, rogue leader McKenas Cole (Quentin Tarantino) goes after Sloane and searches for a mysterious device.

Sydney and Dixon travel to Las Vegas to try and track down the group that nearly destroyed SD-6. This episode marks the first time that “Alias” has left the Los Angeles area to shoot on location, with Las Vegas being the locale.

Sydney must break into a safe located in Sloane’s home in order to gain access to a mysterious Rambaldi artifact.

Sydney is tested to discover her posisble link to a 500-year-old artifact. Roger Moore guest stars as Edward Poole, a member of the Alliance of Twelve.

While being questioned by the FBI about her possible ties to a Rambaldi artifact, Sydney makes a shocking discovery that may unravel the mystery of the 500-year-old prophecy.

Sydney is stunned when she bumps into her ex-lover, Noah (Actor/Writer/Director Peter Berg, “Chicago Hope,” “Very Bad Things”), while on a case to track the activities of “The Man.”

Passion begins to spark between Sydney and Noah (Peter Berg, “Chicago Hope”), while new revelations about Sydney’s mother prove disturbing to Jack.

Sydney’s cover with Vaughn is threatened by an SD-6 agent sent to thwart a CIA mission, Will learns the identity of one of his kidnappers, and Emily Sloane’s already fragile life is further endangered by her revelation to Sydney.

Will’s world begins to crumble as he gets deeper into his investigation of SD-6, and Dixon begins to question Sydney’s activities.

Will’s life hangs in the balance, and Sydney comes face-to-face with “The Man.”