Arrow has finally returned to the mini screens and fan theories have already started circulating.

The fate of Felicity Smoak (Emily Bett Rickards) was in the balance after she was shot by Season 4 antagonist Damien Darhk’s (Neal McDonough). However, the Australian promo for the winter premiere showed that she is alive and kicking.

Now that Felicity is alive, a new fan theory has been making the rounds. There has been a ripe speculation that upcoming Arrow villain Noah Kuttler, a.k.a. The Calculator (Tom Amandes), is Felicity’s father. Entertainment Weekly asked Executive producer Wendy Mericle, if the rumours were true.

Here is what she said:

“Definitely tune in. We are very excited about this character. He does have a connection to Felicity. We’re just really thrilled. Tom Amandes has been amazing in the role and is bringing a lot of kindness and a lot of malice to this character.”

According to Screen Rant, “The Calculator” will first appear in Episode 12, “Unchained.” He is someone who uses his advanced skills in computer science and Internet manipulation to blackmail Roy out of retirement.

Felicity and Oliver also seem to have some tension between them, which is quite evident in the latest episode “Blood debts.” Wendy was also approached to clear some doubts over the relationship between the two.

She was quoted in TVLine as saying:

“I definitely think there is some tension and we’re actually very intrigued to see if fans pick up on a very big clue about where they are at that point in their relationship. It’s in the scene, and it’s a visual clue.”

The visual clue which everybody picked out is that Felicity is not wearing her engagement ring. If the rumours are to be believed, then things aren’t going that well between the two.

The next episode of “Arrow,” “A.W.O.L.,” airs Wednesday, Jan. 27, at 8 pm ET on The CW.