Duplicate versions of Michael, Isabel and Tess come to Roswell after hugging their king Zan, to urge Max to attend an important interstellar summit in New York City, but they have their own agenda; Ava stays behind in Roswell.
s02e01 - Skin and Bones
s02e02 - Ask Not
s02e03 - Surprise
s02e04 - Summer of '47
s02e05 - The End of the World
s02e06 - Harvest
s02e07 - Wipeout!
s02e08 - Meet the Dupes (1)
s02e09 - Max in the City (2)
s02e10 - A Roswell Christmas Carol
s02e11 - To Serve and Protect
s02e12 - We Are Family
s02e13 - Disturbing Behavior (1)
s02e14 - How the Other Half Lives (2)
s02e15 - Viva Las Vegas
s02e16 - Heart of Mine
s02e17 - Cry Your Name
s02e18 - It's Too Late and It's Too Bad
s02e19 - Baby, It's You
s02e20 - Off the Menu
s02e21 - The Departure
Max, Isabel and Michael have been hiding a secret for their entire lives - that they come from a different planet. When Max is exposed while saving Liz's life, a girl who attends their high school, it eventually leads to a few others learning their secret. The three aliens and their new friends try to go about their normal lives while trying to discover more about where they come from and how to get home - all while keeping their identities secret from the rest of the world.