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.

Actor Lizzy Caplan stops by TODAY to share details about starring alongside legendary actor Robert De Niro in the new Netflix thriller “Zero Day.” Caplan also opens up about moving with her family from Los Angeles to New York City and discusses the lasting relatability “Mean Girls” has to high schoolers.

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.

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 loved those scenes,” Lizzy Caplan told DECIDER. “We knew from very early on that there was a rich history that we wanted to convey.” That history includes Alex’s deceased brother, Nick (Jackson Eick).

Lizzy Caplan teased that she gave legendary actor Robert De Niro, 81, acting advice on the set of their new miniseries “Zero Day.” “Yeah, I told him how to do a few things,” the actress, 42, jokingly told Page Six at the New York premiere of the new Netflix show Tuesday.

Everything you need to know about the 'Zero Day' star's love life including how she met her husband and when they were married.

Lizzy Caplan told UPI her character in the new limited series "Zero Day" is enmeshed in a family drama set against the backdrop of a national crisis.