In the mid-season finale of The Originals, Rebekah (Claire Holt) made mention of a secret she and Marcel (Charles Michael Davis) share that would make Klaus (Joseph Morgan) very, very angry. Who else knows of this epic secret? Executive producer Michael Narducci talked to TVLine on that very subject!

“There may be someone besides Rebekah and Marcel who also has access to that secret,” Michael shared. “Part of that story will then be how Marcel and Rebekah, who are not exactly on the same page, figure out what they're going to do to keep the secret from getting out?”

The plot thickens! First, let’s get our secret-related speculation out of the way: We think Marcel was the one to bring Mikael, aka Klaus’ vengeful stepfather, to New Orleans. One hundred years ago, the Mikaelsons fled New Orleans, their home, leaving Marcel to scoop up the abandoned empire in their absence. If this is the secret, Klaus would likely never forgive Marcel — the boy he raised as his own son and eventually turned vamp — for the backstabbery.

If Marcel’s tipping off Mikael is the secret, then it’s hard to guess who else might know. Elijah, perhaps? He is one of the only other characters to have been around back in the day. Another possibility is that the witches or Father Kieran is on the secret, a truth passed down from generation to generation. The latter possibilities are more interested because they could be used as collateral against Marcel (and Rebekah?) by these marginalized factions. The question is: How far will Marcel and Rebekah go to keep the secret from getting out? Would they kill to keep it quiet?

What do you think the secret is? And who else knows about it? Sound off in the comments below!

Catch the next episode of The Originals on Tuesday, January 14 at 8 p.m. ET on the CW.

Source: TVLine

Kayti Burt is a contributing writer for Wetpaint Entertainment with a penchant for all things pop culture. Follow her on Twitter and Google+!