Liz tries to maintain her relationship with Kyle despite her deep bond with Max; Michael is obsessed with the idea that there was another alien in Roswell in 1959 and tries to decipher the meaning of the flashes only he sees. Meanwhile, Liz suspects the new guidance counselor Ms. Topolsky is hiding something, especially when she sees her with Michael's file.

Liz Parker learns Max Evans' out-of-this-world secret when he saves her life and must rely on her to safeguard his secret as an orphaned extraterrestrial.

After the death of congresswoman Whitaker, Max and the gang visit her hometown, Copper Summit, Arizona, where they find themselves trapped in enemy territory when they learn the whole town population are Skins.

Isabel is concerned about Maria's nervous reactions to Sheriff Valenti, so she invades one of Maria's dreams to determine whether she can keep the aliens' secret.

Liz and Max journey to an American Indian reservation where they glean information from an elderly tribesman about the alien who vanished in 1959.

Max plays host to actor Jonathan Frakes at the annual UFO Convention while trying to avoid the meddlesome couple who witnessed Max's life-saving abilities on Liz at the Crashdown Cafe.

Harding finds the video camera hidden in his house and gives it to Valenti. The lawman then tells Max that his safety depends upon his willingness to share information. Meanwhile, Tess reveals a personal secret to Isabel.

Max and the others must rescue Michael after he is arrested for murder; Liz takes a job with a congresswoman who has a hidden agenda.

Brody Davis, the mysterious new curator at the UFO Museum has the group on edge, and Michael and Isabel plotting his demise.

Michael discovers the hidden history behind the 1947 crash when interviewing a World War II survivor for a school project. The story unfolds with familiar faces portraying people in 1947.

Max and Tess depart for the interstellar summit in New York City with Rath and Lonnie, Michael and Isabel's duplicates, who both harbor a secret agenda for their future king and an alliance with Nicholas, the Skin. Ava reveals to Liz that Rath & Lonnie murdered Zan. Tess is kidnapped by the dupes after Max learns of their true intentions. When Max finally finds Tess she reveals that they tried to read her mind to find the Granolith but she resisted. She then says that they're gone but did they die or are they still out there? Ava says goodbye to Liz and leaves Roswell.

Sheriff Valenti is suspended from the force after refusing to answer the FBI's questions about Max and Isabel, but he soon finds himself right back in the thick of things when Laurie DuPree shows up at his house claiming to be chased by aliens.

Michael and Maria flee from Roswell after helping Laurie DuPree escape from the police, and Max learns that a deadly parasite was released into Earth's atmosphere when their ship crashed 50 years ago.

Max tries to stop Alex and Kyle from being buried alive in a cave filled with glowing blue crystals; Isabel is kidnapped by Grant Sorenson possessed by the alien parasite queen; Michael is shot while trying to protect Laurie.

The onset of junior prom stirs up emotional tumult as Liz tempts fate by asking Max to be her date, Isabel decides Alex is the man she's been searching for, and Michael tells Maria he won't take her to prom.

Liz continues her investigation into Alex's death while Isabel plans her future and Maria wonders whether Michael will always be around.

Brody Davis, his mind frazzled from an electric shock,holds several members of the gang hostage, when he begins to remember what happened when he was abducted, such as the New York City interstellar summit and the fact that Max is an alien. Max must use his healing abilities to fix Brody's mind so that he doesn't remember the alien mind that inhabits him. Tess must mindwarp Amy DeLuca into not remembering that Brody held them hostage.

Max and Liz are arrested and jailed for holding up a convenience store. Meanwhile, Isabel has a secret affair with a handsome attorney, and Michael tries to straighten out his life.

With Alex's ghost as her guide, Isabel must finally confront her fears about love and her conflicted feelings for Jesse. Meanwhile, Maria happily discovers a whole new, human part of Michael in, of all places, a bowling alley, and Liz and Max struggle to remain together despite her father's insistent disapproval.

Max travels to Hollywood while investigating a murder he believes was committed by an alien. He discovers a link to a Paramount science fiction show called "They Are Among Us" and when he goes to the Paramount lot to investigate he ends up auditioning for the part of an alien on an episode of "Enterprise" directed by Star Trek alum, Jonathan Frakes. Meanwhile, back in Roswell, Isabel and Jesse struggle over how to reveal their engagement to their families.

Max, with the help of Kal Langley, undertakes a dangerous journey as he seeks to learn of the fate of Tess and his son. Meanwhile, back in Roswell, Isabel and Jesse must face the negative reactions of their parents and friends to their impending marriage.

Right before her wedding, Isabel is torn with doubt when she has erotic dreams of her former alien lover, Kivar. Meanwhile, a reluctant Max agrees to serve as Jesse's best man, while attempting to investigate him at the bachelor party.

Liz's grandmother is rushed to the hospital after suffering a stroke prompting Liz to reach out to Max for comfort.

Liz discovers her personal journal, which contains all she knows about the aliens, is missing and she fears it has fallen into the hands of someone who could expose the aliens.

Michael's monomaniacal urge to find the geodesic dome that's been stalking his dreams leads him to hijack Maria's car to Texas.