VIDEO: New Clip for ARROW's Mid-Season Finale on The CW

The CW just released a clip from this week's mid-season finale of The CW's ARROW, delving into the investigation of Sara Lance's killer. watch!

In the episode, airing on Wednesday, December 10 and titled "The Climb," Nyssa returns to Starling City and tells Oliver that her father, Ra's al Ghul has given Oliver 48 hours to find Sara's killer or the League of Assassins will start killing the citizens of Starling City. Laurel is stunned when her father delivers a very special Christmas gift -- her mother, Dinah. Meanwhile, Ray tries to make amends with Felicity and Oliver sets a meeting with Ra's al Ghul.

"The Climb" is directed by Thor Freudenthal and written by Jake Coburn and Keto Shimizu.