The episode is directed by John Dahl from a teleplay by Marc Guggenheim :
"...it's holiday time at the 'Queen' household .
"Meanwhile, 'Tommy' (Colin Donnell) asks 'Laurel' (Katie Cassidy) to spend Christmas with him but she points out that Christmas was also the birthday of her sister 'Sara' and she needs to be with her father (Paul Blackthorne).
"Tommy suggests changing things up might be the best way for everyone to heal but Laurel isn’t sure her father is ready for that.
"Meanwhile, 'Diggle' (David Ramsey) tells Oliver someone is killing the people on his father’s list with arrows, which sends Oliver off to face his toughest adversary yet..."
Click the images to enlarge and Sneak Peek "Arrow: Year's End...