List of Earth: Final Conflict episodes

Boone investigates his wife's death while feigning unswerving loyalty to the Taelons.

Note: First episode to introduce Augur and Sandoval's wife.

Note: Malin Åkerman's first role.

A serial killer with a Taelon implant escapes from prison. He takes on the nature of a Taelon mythical figure.

A disturbance in an Amish community prompts Boone and Lili to investigate. After many Amish deaths that are all very dissimilar, they discover that an alien probe of immense power has been experimenting with tolerances of the local life forms. They contact the Resistance to retrieve the probe so that the first piece of Taelon technology can be studied.

Jonathan Doors, who faked his death to start the Resistance movement, comes out of hiding with a broadcast that interrupts the "World Bowl" of American style football. Zo'or is selected by the Taelon Synod (council) to replace Da'an as the American companion, but Da'an is reinstated when Doors leaks information about Taelon genetic manipulation.

The Taelons successfully persuade governments around the world to stop space exploration; specifically a mission to Mars. Unexpectedly, the people of the world are not happy with the scrubbed mission. Three of the space pilots who were to fly to Mars, steal a Taelon shuttle; Lili’s shuttle. Jonathan Doors facilitates promoting a side mission to utilizing the shuttle to go to Mars and gets pictures of nearby space on the dark side of the Moon revealing the Taelon Mother Ship as well as a base on the moon.

The discovery in Ireland of an ancient Taelon artifact begins the search for the research of Ma'el, a Taelon scientist who journeyed to Earth thousands of years ago.

Note: First appearance of Ma'el and Siobhan Beckett (Kari Matchett), protector to the European companion.

Footage comes to light of Rho'ha killing a man. He is tried in a human court, with Jonathan Doors' son as the prosecutor. Zo'or is appointed to the jury to represent Taelons, and convinces the jury to convict the Taelon.

The probe has been relocated to Russia. With the help of Michael Sloane (Paul Johansson), a former decorated sergeant turned mercenary, the resistance launches an attack on the research base where it is held in order to prevent the scientists from downloading its data core - which could reveal all of their double agents. The probe self-destructs, but not before it makes a replicant of Rayna, which escapes. Joshua Doors confronts the Synod leader.

Note: "First" appearance of Quo'on, the Synod leader, who up until this episode appeared only as an energy form on a viewer.

Divers discover an ancient Taelon ancestor in a shipwreck. Inside the container is the last of a race that predates even the Taelons. However, he makes exact copies of all the people he encounters and wreaks havoc until Boone confronts him in the church where the resistance hideout is. In the firefight, Boone is critically wounded and the prisoner mates with Beckett, the Irish companion protector. Zo'or takes the opportunity to apparently vaporise Boone while he is in a medical tank. The synod chooses to remain on Earth, even with the danger from violent aliens such as the Kimera Ha'gel.

Agent Beckett gives birth to an alien-human hybrid that rapidly matures to adulthood. The child assumes the identity of Liam Kincaid (Robert Leeshock), an old comrade of Boone's. Liam is swiftly recruited by Da'an to be his new Protector, replacing William Boone. Da'an waives the usual CVI and Skrill implant requirements, but is unaware that Liam possesses a far more potent defense: the Shaquarva. The Taelon Synod leader Quo'on is killed by the replicant from the probe. It is learned the probe came from the Jaridians, with whom the Taelons are at war.

Liam and Augur are stranded in a parallel universe when an accident damages their shuttle while in inter-dimensional space. In this world, the Taelons reign supreme through their enforcer Kayla (the parallel Lili), and are opposed by a resistance led by Jason (the parallel Sandoval).

Beckett's CVI begins to break down, causing her to slip and fall while climbing in a cave. Unconscious, she hallucinates a trial for her crimes against humanity and for collaborating with the Taelons. Liam and Augur try to find Beckett before Sandoval finds and kills her. Although they are successful, Liam is too late to save her, but is finally able to reveal his true identity as his mother dies in his arms.

Dr. Belman and her scientist daughter Joyce (Polly Shannon) inject an injured chimpanzee with a serum containing Taelon DNA, allowing him to regenerate his injured organs. Unlike her mother, Joyce is eager to try the serum on a human subject and does so on herself.

When Maiya begins to suffer from dimensional phasing, Augur claims that Maiya and her counterpart, Martinez, must merge or they may both die. Doors announces his candidacy for President of the United States in order toto challenge the Taelons. Lili confirms that Martinez and her have the same father. Sandoval questions Maiya on the mothership, while Doors and Zo'or discuss joining forces.

The Resistance is warned of the planned assassination of Jonathan Doors during the US Presidential debate.

U.S. President Thompson (Barry Flatman) declares a state of emergency and imposes martial law until the Resistance can be crushed.

Renee and Street assemble mercenaries to find Liam. Unfortunately, they discover that the Atavus, the savage forerunners of the Taelons and Jaridians, have appeared, and they are intent on restoring their food source: humanity. Ra'Jel, the first – and now last – Taelon has also returned, and informs Renee that Final Conflict is upon humanity: it was Liam's task to lead humanity into it, and Renee's to bring them out. Meanwhile, the Atlantic National Alliance is eager to salvage technology from the mothership, but they must contend with its sole, vengeful occupant: Ronald Sandoval.

Renee finds William Boone in the Himalayas and shows him the crystal found in "Entombed". She tells him that it can locate other Atavus hives on Earth. Boone rejoins Renee so that they may destroy the hives to prevent the Atavus on the Taelon mothership from reviving them. Sandoval revives Zo'or and turns him into a hybrid Taelon/Atavus using an Atavus corpse found under Antarctica. Zo'or's mission is to kill William Boone. Meanwhile Sandoval attempts to recover the crystal from Boone and Renee.

Renee and Street discover a pair of Atavus stasis chambers underneath Stonehenge. They take one to a research station in Antarctica where the Atavus inside, whose name is Gren, revives. After killing the station's scientist, the Atavus escapes with Street through the station's ID portal just before Sandoval arrives. When he realises that the Atavus has gone and he cannot capture Renee, Sandoval destroys the station. Renee escapes and returns to the lair. She finds Street in the Flat Planet Cafe but Gren takes Street hostage and they travel back to Stonehenge to find the mapping crystal seen in "Boone's Assassin". Street recovers the crystal and Renee decapitates Gren before returning to the lair.