Lizzy Caplan, 42, stars as Alexandra Mullen, President Mullens’ daughter and a current congresswoman. Alexandra is often publicly at odds with her father and is named as the head of the Congressional Oversight Committee formed to keep an eye on her father’s investigation.

Robert De Niro is set to make his TV debut in "Zero Day." The Netflix series follows a former U.S. president who's tapped to lead a commission tasked with tracking down the perpetrators of a devastating cyberattack responsible for the deaths of thousands of Americans,

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.