As resentment toward the Tenctonese Newcomers builds, Matt Sikes and George Francisco investigate a string of murders that appears to be the work of a giant, insect-like creature. 

A pair of surgeons has been killing Newcomers for their spartiary glands and implanting the life-lengthening glands into humans. 

George and Sikes go undercover to investigate a prostitution ring, and Uncle Moodri convinces Buck to confess to a murder committed in self-defense. 

Sikes and George struggle to cope with their rebellious children while simultaneously protecting a sex-crazed witness from a mobster. 

Amidst a bloody, city-wide riot, Sikes and George must stop the hoodlums who lay siege to the police precinct in order to raid its evidence locker for contraband. 

Behind on his taxes, George accepts a loan from a Tenctonese businesswoman, only to discover that she is involved in a drug ring plaguing Slagtown. 

A series of grisly murders is patterned after the mythical Tagdot, a Tenctonese boogeyman who severs the hands of his victims as they bleed to death. 

In the wake of an astronomer's murder, George and Sikes must prevent an Overseer from sending a signal into space which could result in Earth's enslavement. 

Someone has been murdering Binnaums, a unique caste of Newcomers required in Tenctonese procreation, and Sikes and George fear it is the work of Purists intent on preventing Newcomers from multiplying. 

George is forced to confront his past when a Russian Roulette-style game once played on the slave ship resurfaces to plague Newcomer society. 

George goes undercover to track down a murderous female Newcomer who has been using a dating service to lure victims. 

Sikes and George join the search for an elusive killer, a Newcomer trained in the quarantine camps to be an assassin for the C.I.A. 

As Newcomers lobby for the right to vote, the violent kidnappings of prominent campaigners are blamed on the Purists. 

A mysterious Tenctonese artifact is passed along from person to person, leaving a trail of dead in its wake. 

While George is featured on a news show as a model Newcomer, Sikes investigates an attack on a Tenctonese porno star. 

When George is implicated in a scandal involving an illegal narcotic known as Jack, it is up to Sikes to clear him. 

Sikes and a pregnant George track a thief who is stealing Newcomer blood to sell Tenctonese hormones to human bodybuilders. 

Sike's vacation plans are thwarted by the return of The Doctor, a ruthless serial killer who eluded him years ago. 

Following a life-after-death experience, Sikes is convinced that a Tenctonese criminal has the ability to bring the dead back to life. 

George's investment in a Tenctonese fabric company is jeopardized when one of the firm's corporate executives meets with foul play. 

Cathy is reunited with a friend from the Newcomer slave ship, but when he exhibits bizarre behaviour and appears emotionally troubled, she attempts to intervene. 

Sikes and Cathy struggle with their romantic feelings for one another, while a plot to exterminate the Tenctonese race via a deadly bacteria unfolds. 

• Commentary by Kenneth Johnson on the two-hour pilot telefilm
• Behind-the-Scenes featurette

• Alien Nation: Dark Horizon (original airdate October 25, 1994)
• Alien Nation: Body and Soul (original airdate October 10, 1995)
• Alien Nation: Millennium (original airdate January 2, 1996)
• Alien Nation: The Enemy Within (original airdate November 12, 1996)
• Alien Nation: The Udara Legacy (original airdate July 29, 1997)
• Full-length audio commentary on all 5 movies by Kenneth Johnson
• 4 "making of" featurettes
• "A Family Gathering - A Retrospective" featurette (2007 cast reunion)
• Gag reels
• Still galleries