Many viewers of "The Blacklist" Season 4 has been asking about who are really the parents of Elizabeth Keen played by Megan Boone. With that, there is a fan theory saying that Liz is the daughter of Red played by James Spader. But what does the show runners think about this theory?

According to TV Guide, the theory is called the "Mommy Theory" which is the big secret of Red. The fan theory suggests that Red was previously known as Katarina Rostova which opens the possibility that he could be the mother of Liz. It does sound crazy but many fans of the show ended up confused because of the famous theory.

In "The Blacklist" Season 4, while Red was drugged and poisoned, he told Kirk that Liz is his daughter. After saying that, Red burst out telling Kirk that what he said is what he wanted to hear. Red also whispered to Kirk which could be an important hint on the true parentage of Liz. What did Red whisper to Kirk? Fans are still curious about the message Red passed to Kirk during the midseason finale.

But in an interview with Entertainment Weekly, executive producer Jon Bokenkamp debunked the theory saying, "That's funny. I’ve heard that theory before and it’s a wild one. I’d love to have someone walk me through the logic of exactly how that would work."

Bokenkamp also said that he heard about the theory that Liz is the sister of Tom, Ressler (Diego Klattenhoff) is a brother of Tom (Ryan Eggold) and that Liz is possibly a robot. Although he thinks the theories are wild, he recognized the fact that these theories are all great. But he did not confirm if these theories are true.

"The Blacklist" Season 4 is set to return to the small screen on Jan. 5, 2017 on NBC.