A new trailer for the second half of Arrow's fourth season teases a crazy amount of action alongside the return of fan-favorite heroes, new villainous threats, and a lot more red herrings concerning who the hell is in that mysterious grave. So while the relatively recent midseason finale left us with a lot of questions, this new trailer seems to be pretty short on answers. What it doesn't lack, however, is a wealth of action scenes and the appearance of new and familiar faces.

At this point, conceivably anyone could be in that grave since everyone is threatened with scenes of mortal peril in this new trailer. It might even be a clown car version of a casket (Are clown caskets a thing?) with the entirety of Team Arrow piled up inside, leaving Oliver (Stephen Amell) to start over from scratch. It's not likely, but as the tone of this new trailer is strongly hinting at, no one on the heroic side of things is safe so long as Damien Darhk (Neal McDonough) is around.

Watch the new trailer for Arrow's second half of season four below (via Amell's Facebook page):

Arrow Season 4.The Saga Continues... Posted by Stephen Amell on Tuesday, January 19, 2016

The concern over Felicity's (Emily Bett Rickards) well-being should be the least surprising thing in this trailer, but what surprised me the most was Thea (Willa Holland) landing back in the hospital. How, I'm not yet sure, but it seems like her absence from the team will open the door for Roy (Colton Haynes) to take on the mantle of Arsenal once more, albeit briefly. Also glimpsed in this new video is the return of Katana (Rila Fukushima) in full comic book costume, a new political antagonist in the form of Damien Darhk's wife Ruvé Adams (Janet Kidder), the return of Anarky (Alexander Calvert), and the mysterious ankh-wearing version of Felicity who might actually be (spoiler) Death this time around, depending on whether or not this vision is from a flashback like the one seen in "The Secret Origin of Felicity Smoak."

We'll find out some answers for sure when Arrow returns on Wednesday, January 20th at 8pm on The CW. Before then make sure to return here to Collider for a very special feature in celebration of Arrow's return that's sure to put a smile on your face.

For more on Arrow, be sure to take a look at our recent coverage at the following links:

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Image via the CW