Caleb is a host.
Caleb killed his friend Francis.
Caleb is Serac’s brother.
Some or all of what we’re seeing is actually a simulation.
Some or all of what we’re seeing is actually just another Delos theme park.
Halores will rebel against Dolores.
William is a host.
The data Serac seeks, and the key to the Valley Beyond, is actually in Bernard, and not Dolores.
Serac is not human.
This is all part of Ford’s grand plan.
Caleb is the agitator who will destroy the world.
What are *your* theories about Westworld’s third season? Let us know in the comments!