Sneak Peek new footage, images and synopsis from the next episode of "Under The Dome", titled "Blue On Blue", airing July 22, 2013 on CBS:
"...The 'Chester’s Mill' residents receive an unexpected visit from their loved ones on the other side.
"Meanwhile, the community braces for a threat from outside the 'Dome'..."
Click the images to enlarge and Sneak Peek "Under The Dome: Blue On Blue"...
