Arrow Midseason Finale Trailer Spoiler Images Released

The CW has released a number of photos from next week's midseason finale of Arrow, titled "The Climb."

The episode sees Oliver Queen facing off against Ra's al Ghul, given an ultimatum to solve the mystery of Sara Lance's murder within 48 hours. What's arguably more surprising, though, is the identity of one of the people serving under Ra's al Ghul in the episode. Spoilers ahead.

You can check them out, along with the official synopsis, below.

"The Climb" — (8:00-9:00 p.m. ET) (TV-14, V) (HDTV)

RA'S AL GHUL GIVES OLIVER AN ULTIMATUM; DINAH LANCE PAYS LAUREL A VISIT— Nyssa (guest star Katrina Law) returns to Starling City and tells Oliver (Stephen Amell) that her father, Ra's al Ghul (guest star Matt Nable) has given Oliver 48 hours to find Sara's killer or the League of Assassins will start killing the citizens of Starling City. Laurel (Katie Cassidy) is stunned when her father (Paul Blackthorne) delivers a very special Christmas gift – her mother, Dinah (guest star Alex Kingston). Meanwhile, Ray (Brandon Routh) tries to make amends with Felicity (Emily Bett Rickards) and Oliver sets a meeting with Ra's al Ghul. Thor Freudenthal directed the episode written by Jake Coburn & Keto Shimizu (#309). Original airdate 12/10/2014.