Season 1 - Episode Guide

High school student Liz Parker's life irreversibly transforms after she is shot, and a friend miraculously heals the wound, revealing his true nature.

Liz suspects the new substitute teacher, Ms. Topolsky, is an alien hunter after spying her with Michael's file. Michael steals a key from the Sheriff.

Max, Isabel and Michael worry Maria may reveal their secret to Sheriff Valenti, so Isabel invades her dreams to determine her trustworthiness.

When Liz's grandmother suffers a bad stroke, she remains with her at the hospital. Kyle's friends beat Max, forcing Liz to make a difficult decision.

Liz considers many suspects in the disappearance of her secret journal -- in which she describes how Max used his alien powers to save her life.

Liz and Maria travel with aliens to investigate a geodesic dome that may explain their origins where Michael discovers the importance of Valenti's key.

Liz and Max travel to an Indian reservation and find answers about the mysterious fourth alien. Maria and Michael can't ignore their attraction.

While Max lies injured in the hospital after an accident, Liz and the gang substitute his blood with Alex's so Max's identity will not be revealed.

A winter heat waves sparks unlikely romantic couplings, including a surprising match-up for Isabel. Liz confesses to Alex about Max, Isabel and Michael.

At the Indian reservation, Michael becomes gravely ill after undergoing a mystic sweat ritual, requiring all his friends to band together to save him.

Max uses his powers to save his adopted mother from a fire, forcing him and Isabel to consider telling their mother about their true origins.

The aliens and Sheriff Valenti race to a possible extraterrestrial landing site. Michael suspects River Dog is hiding his true identity.

When the annual UFO convention comes to town, Max is threatened by a man who wants to expose him and another who wants to kill him.

Liz wins a radio contest and goes on a date with a dark-haired man from an exotic place; Max and Kyle get drunk. Michael and Isabel try to contact Nasedo.

Michael takes action after his alcoholic foster father's abuse becomes physical, causing Michael to become a suspect in his disappearance.

Max's kissing sessions with Liz produce flashes from his past that lead toward another clue to his origin. Michael and Maria want visions too.

Ms. Topolsky returns to Roswell, warning the aliens and their friends and convinces Michael to meet with her. A new girl as school befriends Isabel.

The aliens and their friends don't trust Tess, but Max is strangely and uncontrollably drawn to her, as Liz watches. The gang uncovers the truth.

The aliens and their friends speculate Tess is the dangerous shape-shifter, Nasedo. Isabel and Michael experience intense dreams about each other.

Tess tells the aliens more about Nasedo, who, hoping to entrap government special agents, shape-shifts into Max and kidnaps Liz. A new deputy arrives.

Nasedo and Tess team up with Michael and Isabel to track down Max, who has been captured and is being subjected to torture by Agent Pierce and the FBI's special unit.

The aliens and their human friends elude the FBI. The foursome discovers their destiny -- a future that does not include the humans or life on Earth.