A new extended preview for the midseason premiere of chapter 4 of Arrow really amps up the hype.

Oliver Queen's Mayoral Campaign Posters Revealed

The new trailer for the highly anticipated return of season 4 of Arrow, titled "Blood Debts," reveals a whole lot of intense action and hints at the possible candidates for the grave. The clip leaves viewers pretty confused about who might be left six feet under, hinting at various possibilities. Some of the individuals dear to Oliver (Stephen Amell) that might be in trouble include Thea (Willa Holland) and Laurel (Katie Cassidy). Initially many assumed that Felicity (Emily Bett Rickards) was the one that might be in throes of death.

But in the clip we see Laurel and Thea could also be threatened enough to die. In one frame, Oliver is seen sitting by an unconscious Thea in the hospital. Even Laurel is very injured in the process of fighting.

Showrunner Teases 'Real Game-Changer' In Upcoming Episode

In the trailer, Damien Darhk (Neal McDonnough) is also seen vowing to bring the world to an end as he wreaks havoc.

Here's the official synopsis for the upcoming midseason premiere:

"THE AFTERMATH - Oliver (Stephen Amell) must deal with the devastating consequences of Darhk's (guest star Neal McDonough) last attack. Seeking revenge, Oliver goes on a brutal manhunt looking for Dahrk. Jesse Warn directed the episode written by Oscar Balderrama & Sarah Tarkoff."

"Blood Debts" will air on January 20 on The CW.

Watch the new preview:

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Arrow, The cw, Television