Under The Dome Season 3 - Episode 12 < 2026 >

This episode sets the stage for the series finale, " The Enemy Within ," as the dome's barrier finally begins its terminal breakdown. AI responses may include mistakes. Learn more Under the Dome recap: Incandescance - Entertainment Weekly

Big Jim confronts the volatile Hektor Martin, who is determined to kill all infected townspeople to prevent the alien "infection" from spreading beyond the dome. Key Characters and Status Status/Action in Episode 12 Dale 'Barbie' Barbara Races with Julia to save his child from the Kinship. Julia Shumway Under the Dome Season 3 - Episode 12

As oxygen levels drop, Joe McAlister is under immense pressure to complete the device intended to bring the dome down. This episode sets the stage for the series