Alias: Season 4

Season 4 overview

Sydney Bristow loses her clearance after a dangerous isotope operation and enters a secret operational structure. Personal revelations about Jack Bristow deepen the tension inside the team.

Key story beats

  1. Aurine-12 Train Operation — Sydney Bristow takes the Aurine-12 isotope from a Russian nuclear scientist and escapes while hanging outside a speeding train.
  2. Clearance Revoked — CIA Director Hayden Chase strips Sydney Bristow of her clearance for rogue behavior and assigns her to the mail room.
  3. The Hidden APO Entrance — Sydney Bristow enters a secret sub-division after losing her official clearance, while Jack Bristow and Arvin Sloane remain connected to the new operational structure.
  4. Samurai Sword Infiltration — Marshall Flinkman helps design a lure for a target, while Sydney Bristow steals the Shintaro sword from an Asian museum and escapes after an alarm is triggered.
  5. The Awful Truth — Sydney Bristow plans to tell a close relative that Jack Bristow executed their mother. Arvin Sloane assigns APO to recover a stolen NSA computer.
  6. Ice Five Interception — Sydney Bristow and an undercover operative attempt to intercept Ice Five, a bioweapon that can crystallize water inside the body.
  7. Liberty Village Operation — Sydney Bristow infiltrates a former KGB training village used by terrorists preparing an electromagnetic attack on the American economy. Marshall Flinkman finds information in a book connected to a former intelligence contact.
  8. Hallucinatory Infection — Sydney Bristow is exposed to an infectious drug and suffers deadly hallucinations. Marcus Dixon tells Arvin Sloane that he suspects a treacherous endgame and may eventually kill him.
  9. Chemical Weapon Pursuit — Sydney Bristow conducts an undercover operation to locate a deadly chemical while Arvin Sloane expresses concern about the safety of a team member.
  10. Nadia Abduction — A former intelligence operative abducts Sydney Bristow's sister and brands her with a symbol associated with Rambaldi zealots. Sydney follows the ransom instructions while carrying out a separate covert assignment.
  11. Sark's Conditional Assistance — APO uses a captured operative to infiltrate a revolutionary front and retrieve a bomb. Jack Bristow forces a critically ill source awake to obtain information, angering Arvin Sloane.
  12. The Index Gambit — Sydney Bristow and Marcus Dixon use a birthday dinner to obtain Arvin Sloane's secure-phone key and provide a corrupted database key. Jack Bristow later presents the key to former Alliance associates, enabling access to a master blackmail list.
  13. The Nightingale Lead — Sydney Bristow and a colleague discover that Nightingale is a molecular manipulation weapon located in a Siberian nuclear reactor. Arvin Sloane and Jack Bristow already know of its connection to a former intelligence family.
  14. The Rambaldi Manual Exchange — A field operative makes a deal for information about a missing father and is forced to shoot Marcus Dixon. Meanwhile, a hidden bank account connected to Arvin Sloane is discovered.
  15. The Sloane Impostor — Arvin Sloane argues that an impostor is responsible for the recent criminal activities. A meeting over the Nightingale coil fails, an associate is killed, and the impostor escapes with the coil.

Seasons

Interactive Features

Episode Guide

Content sources

Plot analysis generated from content on Wikipedia, licensed under CC BY-SA 4.0.

Related entry on Wikidata (Q212807), public domain (CC0).