AMC has released via Twitter a series of new promo images for the upcoming sixth season of "The Walking Dead" as well this weekend's San Diego Comic-Con.

The images feature series stars Andrew Lincoln, Danai Gurira and Lennie James each separated from Walkers only by a single door. The composition of the images certainly create a nice element of tension; however, there is another added bonus to the set-up. They allow for nice placement on elevators -- such as those at the San Diego Marriott Marquis & Marina, for one example -- for further promotion.