Highlights from the Seventh Episode of Season 2 of Under The Dome

When Barbie descends into the unknown abyss in the mysterious tunnel to look for Sam, he discovers a world that is familiar but filled with unanswered questions.

Season 2 Episode 7 - Under The Dome - CBS.com

1. Season 2 Episode 7 - Under The Dome - CBS.com

When Barbie descends into the unknown abyss in the mysterious tunnel to look for Sam, he discovers a world that is familiar but filled with unanswered questions, on UNDER THE DOME. Photo: Brownie Harris/CBS©2014 CBS Broadcasting Inc. All Rights Reserved.

2. "Going Home" - S2E7

When Barbie descends into the unknown abyss in the mysterious tunnel to look for Sam, he discovers a world that is familiar but filled with unanswered questions, on UNDER THE DOME. Photo: Brownie Harris/CBS©2014 CBS Broadcasting Inc. All Rights Reserved.
Barbie and Julia - S2E7

3. Barbie and Julia - S2E7

When Barbie descends into the unknown abyss in the mysterious tunnel to look for Sam, he discovers a world that is familiar but filled with unanswered questions, on UNDER THE DOME. Photo: Brownie Harris/CBS©2014 CBS Broadcasting Inc. All Rights Reserved.
In the Tunnel - S2E7

4. In the Tunnel - S2E7

When Barbie descends into the unknown abyss in the mysterious tunnel to look for Sam, he discovers a world that is familiar but filled with unanswered questions, on UNDER THE DOME. Photo: Brownie Harris/CBS©2014 CBS Broadcasting Inc. All Rights Reserved.
Big Jim - S2E7

5. Big Jim - S2E7

When Barbie descends into the unknown abyss in the mysterious tunnel to look for Sam, he discovers a world that is familiar but filled with unanswered questions.
Underground - S2E7

6. Underground - S2E7

When Barbie descends into the unknown abyss in the mysterious tunnel to look for Sam, he discovers a world that is familiar but filled with unanswered questions.
Joe and Julia - S2E7

7. Joe and Julia - S2E7

Julia - S2E7

8. Julia - S2E7

When Barbie descends into the unknown abyss in the mysterious tunnel to look for Sam, he discovers a world that is familiar but filled with unanswered questions.
The Egg Glows - S2E7

9. The Egg Glows - S2E7

When Barbie descends into the unknown abyss in the mysterious tunnel to look for Sam, he discovers a world that is familiar but filled with unanswered questions.
Melanie, Junior and the Egg - S2E7

10. Melanie, Junior and the Egg - S2E7

When Barbie descends into the unknown abyss in the mysterious tunnel to look for Sam, he discovers a world that is familiar but filled with unanswered questions.