With Liz Ortecho (Mason) and Max Evans (Dean) finally able to best Max’s clone, Mr. Jones, at the end of Season 3, it seems a bit of happiness is finally ahead for them. Little do they know, a new threat is emerging down in Careyes, Mexico when a naked alien is brought to an American scientist (Shiri Appleby) in a nearby cantina. As this mysterious new alien is set on a collision course with our heroes, we’ll discover that Mr. Jones might be gone, but his vile plan for two worlds might just live on.
Meanwhile, our couples contemplate new crossroads and definitions of their relationships. A new mystery that mimics the crash of ’47 in Roswell forces Alex Manes (Blackburn) and Michael Guerin (Vlamis) to balance personal goals and undercover work; Maria’s (Hemmens) potential cure for her regenerative disease comes with a shocking twist; and Dallas (Pilar), Isobel (Cowles) and Kyle (Trevino) contemplate new layers of how their families might all be connected. –Showbizjunkies.com

Säsong 4 av Roswell, New Mexico, vilket även kommer bli seriens sista, har premiär på HBO Max den 7 juni.