Following the shocking mid-season finale which aired on December 10, in which Oliver (Stephen Amell) was slain by Ra's Al Ghul (Matt Nable), the promo for the upcoming episode was unveiled.

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In the promo somebody is heard saying Oliver is dead, as the camera pans atop the mountain top, where the duel between Ghul and Oliver took place, showing Oliver's limp body on a rock. That's about all the preview gives away about what fans can expect from the next episode, titled Left Behind, which is to air on January 21.

But while this seems to be the reality of the hour, it does not necessarily mean that Oliver is gone for good. As has been suggested by a Screen Rant report, the character could very well be resuscitated, noting it is a normal occurence in comic books. The piece goes on to specifics which could bring Oliver back to life like the immortalising Lazarus Pit, we were made aware of in the previous episode. The pit is also known to heal deadly wounds, perhaps even bring people back from the dead.

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The show sure lived up to its promise of making the mid-season surprising. In a promotional clip for the mid-season finale of Arrow, showrunner Marc Guggenheim spoke about what fans can expect from the episode.

Guggenheim dished about episode 9, titled The Climb, in the video which can be viewed on the show's website.

"I think we all feel that it is our best, most epic, mid-season finale," Guggenheim said. "In this episode Oliver is going to face Ra's Al Ghul in mortal combat."

"It probably has one of the biggest surprise endings that we've ever done on the show before," he added.

Watch the promo for Left Behind here:

Tags: Arrow the cw television