Board Thread:Arrow discussions/@comment-33402819-20171124071716/@comment-2054358-20171126232341

Wasn't Laurel the one who marries Oliver in the comics? They really shouldn't have killed her off and replaced her with an evil doppleganger. I had a theory that maybe when someone dies near their doppleganger, their soul attaches to that doppleganger. That would explain Caitlin's split personality. Caitlin didn't get her powers from the Particle Accelerator. She was possessed by Killer Frost from Earth Two. And because Black Siren appeared in Central City shortly after Laurel's death and says how Laurel Lance is dead on this Earth, maybe she was close enough to see her die from offscreen and the ghost of our Laurel is somewhere inside Black Siren's subconscious.