Credit: Gene Page/AMC Photo: Maggie Greene Is Armed and Scared in The Walking Dead Season 4, Episode 5: “Internment”

This new preview for Sunday's (November 10) The Walking Dead Season 4 Episode 5, "Internment" really only includes one new line.

It's from Rick Grimes (Andrew Lincoln) to his son Carl Grimes (Chandler Riggs), and it's either "You shoot or you run, don't let him get close" or "You shoot or you run, don't let 'em get close."

If it's "him" then we have either a dangerous human male — like some one-eyed guy we know — or a guy like Dr. S. who just turned and needs to be put down. Maybe there is a spy in the prison after all, helping The Governor (David Morrissey)? Don’t forget about those rats at the fence, we never solved that mystery.  If it's "’em" then maybe Carl is being tasked with prison management to put down any sick people who turn?

The rest of the preview is the same footage from the first promo, showing Maggie Greene (Lauren Cohan) banging on a door and her dad Hershel Greene (Scott Wilson) apparently still in the sick ward, putting himself at a huge risk.

We do hear a "boom" outside with Rick and Maggie, so it's just a matter of what went boom. Was it Hershel putting down Dr. S. with the ammunition he showed him in that sneek peek video? Was it Carl shooting whoever it is he was supposed to shoot, not that Carl ever waits for permission to shoot?

We'll find out soon enough. So far, Sunday's ep looks like a horror film in action. Are you excited or nervous to see it? Both? Vote below!