That the network would want to squeeze more out of the adaptation of Stephen King's best-seller, about a town trapped under a mysterious orb, is hardly surprising.
It was the network's most-watched summer premiere since 2000, giving CBS incentive to take advantage of the open-ended option for the series.
"We're excited to tell more stories about the mystery of the dome and the secrets in Chester's Mill, and are thrilled to have the master storyteller himself, Stephen King, tell the first one of next season," CBS Entertainment President Nina Tassler said.
"Under the Dome" is averaging about 13.8 million viewers, according to Nielsen numbers.
King is slated to write the premiere episode of the second season. The drama will return next summer with 13 episodes.
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