Ever since "Arrow" kicked off its fourth season, fans have wanted the answer to one question: whose funeral is it? The season premiere included a flashforward scene of Oliver Queen (Stephen Amell) and "Flash" star Grant Gustin attending a funeral. The identity of who exactly is in the casket has yet to be revealed, and plenty have tried to figure out that answer.

Now, Spoiler TV has a round-up of behind-the-scenes "Arrow" images depicting the cast filming a funeral scene. The pictures include a number of "Arrow" actors past and present, thus possibly narrowing down the list of casket candidates. Katrina Law (Nyssa al Ghul), Alex Kingston (Dinah Lance), Madison McLaughlin, David Ramsey (John Diggle), Emily Bett Rickards (Felicity Smoak), Paul Blackthorne (Quentin Lance), Willa Holland (Thea Queen) and Katie Cassidy (Laurel Lance) are all seen in the images. Notably, it looks like Blackthorne is in the images both with and without hair.

It's possible that any of these actors, specifically the ones that are regulars on "Arrow," could be in the casket and on set watching the scene unfold. It's also possible that this is another funeral scene entirely, or a dream sequence of some sort. Or it could be more footage from the funeral that has intrigued fans all season long.

"Arrow" airs on Wednesdays at 8 PM ET on the CW.