Over a year after its rapturous, watercooler-kindling first season, Westworld will finally return April 22, bringing viewers once again into its futuristic universe. Its freshman run was widely hailed for its cinematic visuals, ambitious storytelling, and exceptional acting, but perhaps its biggest draw were its internet-igniting twists, a factor that spurred some of the most rabid fan theories in TV history.

The Season 1 finale tied up the bulk of its loose ends, but Season 2 is sure to leave fans just as slack-jawed. So, in honor of the show's return, look back at some of the biggest TV plot twists to date. (Spoilers, obviously, ahead).

The 10 Biggest TV Plot Twists