Natalie Brown plays one of the most complicated characters on FX's "The Strain." Since being turned into a strigoi in Season 1 and becoming one of the Master's key players, Kelly Goodweather (Brown), has made it her mission to find her son Zach (Max Charles) and also turn him into a strigoi. Eph (Corey Stoll) is doing his best to protect his son from his ex-wife, but Kelly continues to get closer and closer to taking Zach.

Brown told International Business Times during a press call, that Kelly's love for Zach continues to drive her character. Kelly will take no prisoners with whoever is in her way and those who are, may have to suffer the consequences.

"I think that a lot of the circumstances that were present before Kelly was turned are retained within her memories, it fuels the feud between Kelly and Eph," Brown said. "Guillermo [del Toro] had described it as the custody battle that never ends in the first audition and now I know exactly what he was talking about."

The 42-year-old actress has had to adapt to the ways her character continues to change, as the darkness continues to spread. She went from playing a human to playing a monsterous strigoi, which requires four and half hours of makeup to get into the character. However, in episode 8, Brown got to go back to human form, as the strigoi Kelly disguised herself with makeup to try and trick Zach.

"Costume change and a little bit of lipstick can go a long way to making even a strigoi happy, but the four and a half hours of the prosthetic makeup process is something that I really enjoy," Brown said in a conference call with reporters. "Being able to experience Kelly as a human turned vampire turned back into human looking is a challenge that I really relished in and the products are a lot better smelling shall we say."

Brown said the show is expected to continue to get bigger and better as the rest of Season 2 rolls on. "The Strain," has also been confirmed for a third season next year.

"The battle lines continued to be drawn, alliances continue to be formed and made, alliances continue to be crossed and the story just gets richer and more exciting by the episode," she said. "I’m as anxious as everyone else to see what the writers have in store next season and can’t wait for everyone to see how the rest of the season unfolds."

Catch Brown Sundays at 10 p.m. EDT on "The Strain" on FX.