These skull-cavings will have to tide you over until October. AMC offered this sneak peek at the second season of The Walking Dead during last night's shit-gets-real season premiere of Breaking Bad. Here we see Rick Grimes, two zombies, and a rock. Though it wouldn't be m weapon of choice when battling the undead, you can see that this rock is pretty effective. It's no crossbow, but it gets the job done.