Arrow (8 p.m ., CW) – Nyssa ( Katrina Law) returns to Starling City and tells Oliver ( Stephen Amell) that her father, Ra’s al Ghul ( Matt Nable), has given him 48 hours to find Sara’s killer or the League of Assassins will start killing the citizens of Starling City. Also, Laurel ( Katie Cassidy) is stunned when her father ( Paul Blackthorne) delivers a very special Christmas gift – her mother, Dinah ( Alex Kingston).
Survivor: San Juan del Sur (8 p.m ., CBS) – A shocking tribal council leads to one of the biggest blindsides of the season, and an ankle injury threatens one contestant’s ability to remain in the game.
National Lampoon’s Christmas Vacation (9 p.m ., ABC Family) – It’s that most wonderful time of the year when we put aside all the bad things we hear about Chevy Chase being a jerk, and enjoy one of the funniest Christmas movies ever made. Squirrel!
blackish (9:30 p.m ., ABC) – Certain that his office Christmas party needs a black Santa, Dre makes moves to fill the red suit, even though the head of HR already has the job.
Chicago PD (10 p.m ., NBC) – A huge drug bust puts Olinksy’s family in danger, while the team digs up a common thread with the drug suspects.