Thu Sep 3 10:00pm
Under the DomeIncandescenceNew(Season 3, Episode 12) CBS

The Dome's calcification accelerates, leaving 24 hours before everyone suffocates from the barrier's breakdown. Also: Barbie and Julia try to save his child from the Kinship and Big Jim faces an increasingly explosive Hektor.

Wed Sep 9 9:00pm
ExtantDouble Vision; The Greater GoodNew CBS

In the season finale, Molly reveals disturbing details about Shepherd's death to the GSC and Lucy makes a powerful move that could have frightening results. Later: Molly and JD try to stop a Humanich plot and Lucy has a shocking revelation about GSC.

Thu Sep 10 10:00pm
Under the DomeThe Enemy WithinNew(Season 3, Episode 13) CBS

In the series finale, the Dome comes down and the Resistance tries to protect the outside world from the infected townspeople.