Up until this point on The Originals, Klaus and Marcel have been playing a deadly game of chess, but that might all begin to change after the two go head-to-head in Season 1, Episode 8 (“The River in Reverse”).

We know Marcel and his night walkers take on Klaus in the episode, but according to the synopsis, “when an unsuspecting Marcel uncovers some upsetting information involving Klaus, a confrontation ends in a surprising twist.” Will Marcel stop the fight? Does this have something to do with the flashback in the episode? Will we learn more about Marcel and Klaus’s complicated past?

Executive producer Julie Plec recently told The Hollywood Reporter that Klaus and Marcel may find themselves fighting on the same side soon. “In the first half of the season, you've got the fake friendship, the real friendship, the real potent history between them, the lies they're each telling each other, the way Marcel is protecting himself out of instinctive mistrust,” she said.

She continued: “As that starts to blow up in Klaus's face and the secrets start to get exposed, I think what will test their relationship is [not only] how strong their bond is to the past and their true love for each other back in the day or father and son or however you want to define their dynamic but also what enemies they have to fight against and will they be willing to fight together."

Interesting. So what will bring Klaus and Marcel together? Could Sophie have yet another plan up her sleeve? Will the vampires team up to take down the witches? Or will Tyler’s intel about the baby hybrid force Marcel to re-think his game plan? After all, both Klaus and Marcel know what it’s like to grow up without fathers, so perhaps Marcel will have a change of heart.

What do you think, Originals fans? Will Klaus and Marcel have to work together? Sound off in the comments!

Crystal Bell is an editor at Wetpaint Entertainment and our resident fangirl for all things The Vampire Diaries. Follow her on Twitter and Google+!