'Arrow' Season 4 SPOILERS: Cast Guesses Who's Buried in Grave in Premiere Flash Forward Scene

The Season 4 premiere of Arrow ended with a flash-forward scene that showed Oliver Queen (Stephen Amell) and Barry Allen (Grant Gustin) standing over someone's grave, but we never learned who was buried in it. In a new interview, the cast guesses the identity of the character, and it seems they are just as confused as we are!

“As castmates, we’re all like, ‘Is it you?! Is it you?! Oh, it could be you!” Emily Bett Rickards, who plays Felicity Smoak, tells TVLine. “‘No, you know what, it’s definitely me. It has to be me! It’s has 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,” she says with a laugh.

And it seems that the cast is in the same boat as the hardcore fans who have been trying to collect clues and piece together this mystery.

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

On a more serious note, the most popular theory is that Felicity is in the grave, killed by Damien Darhk, played by the wonderful Neal McDonough. But could the show really kill Oliver's love? Amell admits to TVLine that he has his suspicions about the identity of the dead character, and he also says nothing is off limits.

"You can kill off anyone," Amell says. "Modern television has proven to us that you can literally kill off anyone."

Finally, Amell notes that he was pleased with the flash forward scene because "there's not one huge swerve in the first nine episodes, like there have been in almost the first three seasons." Regardless, he assures fans the first stretch of Season 4 episodes is "excellent."

What do you make of the cast's remarks? Let us know in the comments section below.