December TV Preview: 25 Must-See Shows for the Holiday Season

"Dexter" seventh-season finale
Sunday, 12/16 at 9 PM on Showtime

Has it been creepy to watch real-life ex-spouses playing adopted siblings, one of whom has fallen in love with the other, who -- oh, by the way -- has revealed himself to be a serial killer? Yes, especially since they both work for the Miami police department and have caught wind of another serial killer, whom brother serial killer has fallen for himself. Then there's the police chief... more 

"Dexter" seventh-season finale
Sunday, 12/16 at 9 PM on Showtime

Has it been creepy to watch real-life ex-spouses playing adopted siblings, one of whom has fallen in love with the other, who -- oh, by the way -- has revealed himself to be a serial killer? Yes, especially since they both work for the Miami police department and have caught wind of another serial killer, whom brother serial killer has fallen for himself. Then there's the police chief who's on brother serial killer's trail. So, yeah, that's where we land for the season ender, which promises to carry some storylines over into next year's eighth, and final, season of the show. less