EXCLUSIVE: Crisis PR experts’ job is to be invisible fixers, staying behind the scenes while navigating their clients’ way out of a scandal. The Blake Lively and Justin Baldoni saga changed that, with crisis PR veteran Melissa Nathan front and center in the duo’s legal war.

Robert De Niro marks his first-ever leading TV role in the new thriller Zero Day.Now streaming on Netflix, the series follows former President of the United States George Mullen, played by De Niro, who is called out of retirement in order to find out the source of a deadly cyberattack.

Robert De Niro, Lizzy Caplan and Jesse Plemons star in “Zero Day,” a flabby Netflix thriller about a cyberattack that “switches off” the country.

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.

For Lizzy Caplan, joining Netflix's "Zero Day" was an easy decision to make, citing Robert De Niro's involvement, as well as the "solid" credentials of co-creators Eric Newman, Noah Oppenheim and Michael Schmidt.