Warning: Spoilers ahead for Resident Alien season 4, episode 2, "The Lonely Man."The Greys have long been a part of Resident Alien's story, but a key part of the species' lore has only ever been ...

Top 20 Best Alien Documentaries Welcome to WatchMojo, and today we’re counting down our picks for the most captivating documentaries and docuseries that cover the fascinating possibilities of visits ...