CBS has unveiled a trailer for the third season of "Under the Dome" that hints at least one of the words in the title may have to be changed.

Developed by Brian K. Vaughan from the Stephen King novel of the same name, the sci-fi drama centers on the residents of Chester's Mill, which is suddenly and mysteriously covered by an invisible dome that cuts off the small town from the rest of the world. However, as the sneak peek reveals, that barrier may soon disappear.

"Under the Dome" returns with a two-hour season premiere Thursday, June 25, at 9 p.m. ET/PT on CBS.