Walk-Ins By Sarah Stegall Copyright © 2010 by Sarah Stegall Fringe Thursdays on Fox at 9/8 E/C “Unearthed” Written by Josh Singer Directed by Joe Chappelle Peter: “What happened to patients 1-5?” Walter: “I believe they all settled out of court.” Fox Mulder called them “walk-ins”, spirits or aliens who would take over the bodies of unconscious or brain-dead humans. A thousand years ago they were called demons. Either way, they are a tantalizing and enduring concept in science fiction, whether you believe in souls or not. As Fringe returns from a hiatus of several weeks, we are introduced to the late…