Fans speculate about 'Breaking Bad' prequel, 'Better Call Saul,' connecting 'The Office' to 'Parks and Recreation,' and 'Friends' being a figment of Phoebe's imagination.
'Stranger Things' theories range from Eleven being Hopper's daughter to the Upside Down being a future version of Hawkins.
'Game of Thrones' theories include Bran being the Night King, Tyrion being a Targaryen, and the Three-Eyed Raven manipulating events from the start.
Fans theorize 'The Simpsons' predicted real-life events, like Trump's presidency, and that all characters are actually part of Lisa's imagination.
'Lost' theories include the island being purgatory, time travel explanations, and the characters being connected in a complex web of fate.
Viewers theorize 'Westworld' timelines, multiple Bernard theories, and the possibility of the park existing on another planet in the future.