Anderson said she struck a balance in her work with film and theater, in addition to her commitment to the BBC drama The Fall, but Duchovny also played a big role. "And also David saying, 'But it could be fun!' [Laughs.]" Reprising the roles required a little more than just signing a contract and strapping on a wig. For Anderson, there were a few hurdles she had to get over to become Special Agent Dana Scully once again.

"I think there [were stumbling blocks] more than I allowed myself to admit there might be at the time…Maybe I thought it'd be easier, but…I suddenly realized that I had successfully pushed her so far out of my mind to do other stuff, that finding her again with that thing…whatever it was, that made me feel like her again."

However, Duchovny said he "didn't experience much difficulty." "Maybe a little, but I—it seemed very familiar when I started working with Gillian and getting on set. You know, the first couple of days—this guy is hyper verbal. There's a lot of kind of technical dialogue," he said. "If it's not smooth, it doesn't work. It only took me a couple of days to get that flow."