This publicity image released by CBS shows Natalie Martinez, left, and her Josh Carter in a scene from the series "Under the Dome," about a small town that is suddenly and inexplicably sealed off from the rest of the world by a massive transparent dome. The Nielsen company says an estimated 13.5 million people watched the debut last week. More than 3 million watched on their DVRs or through on-demand services, and CBS reran the premiere Sunday, which drew another 5.1 million viewers. A second episode that ran Monday was seen by 11.5 million people. AP Photo/CBS Entertainment (AP) - CBS says it's renewing the summer series "Under the Dome" for next year. The drama, about a small town enclosed in a mysterious dome, has been a success for CBS. It's based on a bestselling Stephen King book. CBS Corp. chief executive Les Moonves told the Television Critics Association on Monday that King will write next summer's debut episode. More than 13 million people watched the June debut episode of "Under the Dome," a strong number for the fall season, much less the summer. The show has continued to draw about 11 million viewers per episode and has ranked either No. 1 or 2 among all programs each week. Moonves says 13 episodes have been ordered for summer 2014.