Liz gradually comes to realize that Max may have been involved in her death. Amber Midthunder as Rosa Ortecho (seasons 2–present recurring season 1), Liz's older sister, who was apparently killed in a car crash while driving high on drugs, killing two other girl passengers in the process.Karan Oberoi as Noah Bracken (season 1 guest season 2), Isobel's charming, devoted lawyer husband, who senses a secret in his wife.
John as Jesse Manes (seasons 1–2), Alex's homophobic and violent father, a senior master sergeant with a secret to hide Michael Trevino as Kyle Valenti, a doctor and the son of the town sheriff, who learns about horrible things that have happened in his family's past.Heather Hemmens as Maria DeLuca, Liz and Rosa's best friend, who is a bartender at the popular saloon the Wild Pony, and was previously oblivious to the existence of aliens.Alex prepares to abandon his dreams and the possibility of a future with the man he loves, Michael Guerin, to fulfill his father's expectations. Tyler Blackburn as Alex Manes, an Air Force veteran with his fair share of physical and psychological trauma.Lily Cowles as Isobel Evans, an alien and Max's sister, who keeps her true identity a secret by living her life with grace and enthusiasm.