Oliver Queen (Stephen Amell) and Felicity Smoak (Emily Bett Rickards) left the midseason finale on a massive cliffhanger that could allude to who dies at the end of "Arrow" Season 4. the CW

It simply wouldn’t be a midseason finale of the CW’s “Arrow” without at least one main character’s life hanging in the balance. With the first episode teasing a major death by the end of Season 4, many believe that a promo video for the series’ return indicates who will end up in the grave.

[SPOILER ALERT: The remainder of this article will discuss “Arrow” Season 4, episode 9.]

After seemingly defeating his nemesis, Damien Darhk (Neal McDonough), Oliver Queen (Stephen Amell) finally felt safe enough in Star City to publicly propose to his longtime girlfriend Felicity Smoak (Emily Bett Rickards). They left the event hand-in-hand in a limo when tragedy struck. The duo were attacked by some of Darhk’s forces in an apparent assassination attempt as they shot up the vehicle. Oliver shielded Felicity, but eventually jumped into the driver’s seat and sped off to safety. When he turned to check on her, she seemed lifeless. Fans weren’t given an answer as to whether or not she’s alive before the credits rolled on the last episode of the year. Fortunately, the CW gifted fans with a sneak peek at what will happen in the show’s January return in the video below:

It seems the midseason premiere will pick up the same night of the attack as doctors are frantically trying to save Felicity’s life. From there, the clip returns us to the grim scene at the grave in which Oliver proclaims that he’s going to kill, presumably, Darhk. It seems to imply that the doctors fail in their task and the hero is forced to bury the woman he loves. However, as some savvy fans have pointed out, this might not end up being the case.

As ComicBook notes, the flash forward at the grave was said to take place six months after the season premiere. However, prior to getting shot up in the midseason finale, Felicity continually reminded the audience that they’d only been back in Star City for three months while chastising Oliver for not proposing to her in that time. So, unless her surgery takes an impossibly long time, we can be sure that the assassination attempt isn’t what sends the hacker and CEO to that particular grave.

However, that doesn’t rule her out as a possibility when the time actually comes given all that can happen in half a season. In addition, as MTV News notes, a major plot point introduced in the Season 4 crossover with "The Flash," is the fact that Oliver has to hide his estranged son from Felicity or his biological mother won’t allow him to be a part of the child’s life. That’s a very big storyline to simply abandon, but only time will tell what the minds behind “Arrow” have in store for fans when the show returns on Jan. 20, 2016.