If you still haven't watched last month's Arrow mid-season finale "The Climb" yet, you should stop reading now since there will be a huge spoiler. The CW has released a new trailer for the upcoming midseason premiere, "Left Behind", airing Wednesday, January 21 at 8 PM ET. This new footage reveals that Laurel Lance's (Katie Cassidy) transformation into the new Black Canary is complete, as she swings into action, while Ray Parker (Brandon Routh) is seen constructing his new Atom suit.

In the aftermath of Oliver's (Stephen Amell) fight with Ra's al Ghul (Matt Nable), Diggle (David Ramsey) and Arsenal (Colton Haynes) continue to protect the city in the Arrow's absence. However, after three days without hearing from Oliver, they begin to fear the worst may have happened to their friend. Felicity (Emily Bett Rickards) refuses to believe that Oliver could be dead until Merlyn (John Barrowman) pays the team a surprise visit. Thea (Willa Holland) suspects there is something more behind Oliver's disappearance and asks Merlyn for a favor.

While Oliver's "death" was certainly shocking in the midseason finale, it will possibly be even more shocking if the show actually keeps him dead for an extended period of time. Is there any way that Oliver can be saved? Take a look at the new trailer below, and stay tuned for more footage as we get closer to the midseason premiere in just a few short weeks.