COMEDY. "Glee" pays homage to "Love Actually" as four holiday-themed storylines intertwine — minus one involving Andrew Lincoln. Boo.
Midseason finale, 9 p.m., Fox
"The Vampire Diaries"
DRAMA. Here's a fun game: Guess which supernatural creature will first ruin the town's Winter Wonderland-themed party! Will it be a vampire? Vampire hunter? Werewolf? Hybrid? Witch? Weird professor guy who is inevitably something other than human?
Midseason finale, 8 p.m., The CW
"The Big Bang Theory"
COMEDY. A game of Dungeons & Dragons dredges up Christmas memories — which possibly involve games of Dungeons & Dragons — for Sheldon.
Midseason finale, 8 p.m., CBS
DRAMA. A "secret investigation" and "shocking betrayal" are all in a day's work for Olivia and her team as the boss lady attempts to discover who plotted the assassination attempt on the president, aka her former lover.
Midseason finale, 10:02 p.m., ABC