“Dexter” and “Homeland” season finales to air Sunday

Michael C. Hall of "Dexter" - Showtime Photo

The sixth season finale of “Dexter” and the first season finale of “Homeland,” which will be a special extended hour-and-a-half episode, are set to air at 8 and 9 p.m. respectively Sunday, Dec. 18 on Showtime.

The summaries for the finales, provided by Showtime, are as follows:

In “Dexter’s” finale, the Miami Homicide Division is in a race against a lunar eclipse to catch the Doomsday Killer before he commits his final gruesome act. Will Dexter (Michael C Hall) be able to beat them to it? Meanwhile, Debra (Jennifer Carpenter) struggles with, but finally faces up to, a new emotional reality. “Homeland’s” finale finds Carrie (Claire Danes) near-catatonic and confined to bed as events swirl around her. Meanwhile, Brody (Damian Lewis) makes his final preparations for the Vice President’s policy summit.  The pieces to a deadly puzzle are falling into place, but even as she springs into action, Carrie may be too late to put it all together. When the crisis finally hits, no one—not even Carrie—can foresee the outcome of Abu Nazir’s long-awaited attack.

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Damian Lewis and Claire Danes of "Homeland" - Showtime Photo