This interview contains spoilers from all six episodes of "Zero Day," now streaming on Netflix. Lizzy Caplan always knew that her character, Congresswoman and former First Daughter Alexandra Mullen, was behind the catastrophic cyberattack that incited the existential and moral panic that runs through "Zero Day.

"I love a political thriller. I really love being in New York," she added. "So it was as close to a no brainer as you can get." Caplan portrays George Mullen's (De Niro) daughter, Alexandra, who is a young New York congresswoman working hard to distance herself from her father's political legacy and establish herself in her own right.

As former U.S. president turned special commission investigator George Mullen ( Robert De Niro) delivers a climactic closing speech in the final scene of Netflix's new political thriller Zero Day, it's this admission that gets to the heart of the show's message about the importance of truth in today's world.