In honor of Halloween and all things spooky, we've gathered a collection of very real and very scary ghost stories for your ...

During an interview with The Hollywood Reporter, the 2:22 — A Ghost Story star said, "I believe in ghosts but not in the way most people do. I don't think it's a spooky, scary, haunted thing.

But from a scientific point of view, there is only one theory with any evidence - the idea that ghosts are just figments of a person's imagination, however real they might seem.