When Liz reluctantly returns to Roswell, she discovers her teenage crush, Max, is an alien who has kept his unearthly abilities hidden his entire life.

On the anniversary of Rosa's death, Liz and Kyle make a shocking revelation; Michael and Isobel fear Liz will expose their secret.

Liz runs a series of tests on Max to see what powers he may be capable of, and enlists Maria's help to uncover more about Rosa's final days.

Max is conflicted when a town-wide power outage leaves patients at the hospital in need of help; Liz learns details about the night Rosa died.

A series of mysterious blackouts cause Isobel to spiral; Kyle and Alex uncover a secret that Kyle's father had been keeping from everyone.

Secrets about Rosa's final day, Isobel's mysterious blackouts and Alex and Michael's relationship in high school are uncovered in flashbacks.

Liz's day with Mimi, Maria and Alex leads to a new revelation about Rosa; Max takes aim at Wyatt.

Liz and Michael frantically search for a way to help Isobel; Max turns to his mom about the alien symbol's origins; Alex turns the tables on his father.

Max and Michael, and Liz and Maria visit a faith healer in Texas; Alex and Kyle look into what Sargeant Manes may be hiding.

Isobel turns to Liz for help regaining her memories; Max and Jenna investigate a series of strange deaths in the town; Sheriff Valenti reveals information to Kyle about his father.

As the town prepares for the UFO Emporium re-opening Gala, Liz and the others find themselves on a collision course with an unlikely enemy.

When a major revelation comes to light, Max, Michael and Isobel clash over how to deal with the fallout; Alex uncovers a secret about Project Shepard and enlists Kyle and Michael's help.

Max and Michael find themselves at an impasse over how to deal with the 4th alien; Liz has a dangerous encounter with an unexpected visitor; Kyle spirals after uncovering a dark secret about his father's death.