Under the Dome: Watch Season 2 Episode 6 Online

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An explosion in the tunnel traps Barbie and Sam together underground on Under the Dome Season 2 Episode 6.

They find a cavern that appears to never end. While trapped, Sam reveals the truth about what happened the night Melanie died. He feels guilt over the event and it affected his reaction when she was resurrected.

Meanwhile, Melanie tries to replace Angie as one of the Four Hands to find the egg.

There are lots of questions answered, so don't delay! Watch Under the Dome online now.

Carla Day is a staff writer for TV Fanatic. Follow her on Twitter and on Google+.