8 Haunting of Bly Manor Actors You May Recognize From Other Famous Roles

If you recognized Greg Sestero as soon as he appeared on screen as the fiancé on Bly Manor and didn't say, "Oh hi Mark!," you're not watching the show correctly. No matter what Sestero does, he'll never be able to escape his infamous role as Mark, the best friend of Tommy Wiseau's Johnny from The Room.