All manner of speculation has surrounded the mystery about the person in the grave in season 4 of Arrow.

This mystery has become one of the highlights of this chapter of Arrow. We have had all sorts of uncertain information come in but nothing substantial. In an interview with TVLine, Arrow's executive producer Wendy Mericle spoke about when fans might find out about the person in the grave in season 4. Mericle didn't give a definite timeline, only teasing the possible reveals suggesting that there might be more flash-forwards "here and there... right around midseason." In a way the producers hope to drop hints for viewers.

"We're definitely toying with that," Mericle said, "and when and if we do decide to do that, it will reveal even more pertinent information about not who's going to be in the grave but certainly where our characters are when that [death] happens."

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Another report started the rumor that Quentin Lance (Paul Blackthorne) was most likely to be found in the grave. Design & Trend believes Quentin Lance (Paul Blackthorne) will die this season and also lists its reasons for why he might be vulnerable. One of the important reasons is the fact that he is batting for Damien Darhk's team and he might need to redeem himself. The other two reasons are the fact that he is "not a real bad guy" and the fact that the show can afford to lose him as he is not that essential to it.

Previously in another interview with TVLine, Stephen Amell and Emily Bett Rickards also dished about the big mystery.

"As castmates, we're all like, 'Is it you?! Is it you?! Oh, it could be you!" Rickards said. "'No, you know what, it's definitely me. It has to be me! It'shas to be you! It has to be me! It's going to be them! It's going to be no one! No one's in the grave!' Like, that conversation happens daily."

Rickards is rather hopeful, though, as she spoke about the fans and certain publications making educated guesses, she reminded fans that on Arrow everybody can be brought back from the dead, courtesy of the Lazarus Pit.

"Everyone proves that it's not, and everyone proves that it is [any given character]," she said. "'But then there's this! And nobody can die because there's the [Lazarus] Pit. And there's time travel, and if we travel toThe Flash, we'd just bring them back to life.'"

Who do you think could be six feet under on the show. Share your thoughts with us in the comments section.

The next episode, titled 'Brotherhood,' will air on Nov. 18.

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Arrow, The cw, Television