At the same time, it's important to give the audience the hope that the dark future can be changed, says Chaidez. "It really is a tricky balance" — the threat needs to seem unstoppable, but the audience has to feel like it's not completely hopeless, or "it's kind of easy to lose heart, and for the audience to feel a little bit cheated."

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Also, once you have clear stakes, then you can take your time and let other storylines develop, without worrying that the audience will lose interest in the main storyline, says Chaidez.

7) Know the main points of where your season is heading in advance

Another key lesson that Chaidez learned on Heroes as well as Terminator is "having tentpoles for your seasons, so that you know where you're going." That way, you don't get "caught up with a particular cool plot that is going to screw you up later." If you don't have a few foundational pieces of your season-long storyline in place in advance, "you get lost, the audience gets lost, and the audience feels very cheated."

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It's like driving across the country, says Chaidez — if you know you're going to stop in Phoenix, Dallas, Chicago and Philadelphia, then you can "take all kinds of cool detours in between, but you're still headed in the right direction." She felt like they had a very clear sense of where Heroes season one was heading, and ditto for both seasons of Sarah Connor Chronicles.

"Having those as creative goalposts along the way just gives you a lot of confidence and a lot of freedom and allows you to avoid the pitfalls" that can lead to a show feeling like it's lost its way. Audiences "can feel it when you're flailing and you're making it up week-to-week especially on something [as complicated] as time travel."

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How 12 Monkeys Became A TV Show

In addition to sharing her lessons from Sarah Connor Chronicles, Chaidez also explained the backstory of how Terry Gilliam's famously mind-bending movie became an ongoing show on Syfy.

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This show wasn't originally pitched as a 12 Monkeys reboot — Matalas and Fickett had written a spec script about time travel called "Splinter." And then the script was read by Atlas Entertainment, who had the rights to Gilliam's film, and asked if it could be "a jumping-off point for a 12 Monkeys remake," Chaidez explains. Splinter and 12 Monkeys"shared some more elements, but were not exactly the same." Matalas and Fickett have said that if they had been hired to turn 12 Monkeys into a show, they would have said no, because that's such a daunting prospect — but they were able to adapt their own ideas into a version of Gilliam's story.

Chaidez says she's seen Gilliam's film "probably ten or twelve times. I actually did not rewatch it a lot after I got the job, because I wanted my mind to be free to create a different world." The writers definitely did watch the 1962 film La Jetée, and there are a few places in the TV show where the imagery is reminiscent of the French movie.

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More than that, they've tried "to recapture the initial creative instinct of La Jetée, which is like an epic romance. 'I've fallen in love with this woman. I've seen my own death.' A sense of poetry, a sense of mystery," says Chaidez.

One thing from La Jetée that comes up later in the first season of the TV show is revisiting Cole's childhood, and letting him see it again as an adult. "It's not exactly the same plot but it's the same idea of revisiting a moment in your childhood and the notion of not understanding what that moment was and seeing it through new eyes as an adult," Chaidez notes.

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As for turning Brad Pitt's iconic character Jeffrey into Jennifer, Chaidez says that Matalas and Fickett decided to do that "because Brad Pitt's performance seems so iconic. It just didn't seem like something you could match." And they wanted to delve into the idea of being the daughter of mad scientist Leland Goines. "When you see Leland Goines in the pilot, you wonder, 'What was it like to be raised by that guy?'" That makes Jennifer instantly a more sympathetic character. "I think taking the time to explore the relationship between Leland and Jennifer — which is briefly glossed over in the movie — led to a more sympathetic portrayal. And the fact that she is a little bit of a pawn in his bitter scheme which is not exactly the same as the movie."

In the TV show, Jennifer plays a very different role in the plot than Jeffrey did in the movie, and her character is reimagined quite a bit. "She's a brilliant genius, who has sort of gone astray," says Chaidez. Also, Emily Hampshire's performance "draws you in," by being as "big and unexpected a wild card as she is."

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And meanwhile, Cassandra Railly is a virologist instead of a therapist, which allows the show to visit the Centers for Disease Control and Prevention, and makes her more central to the show's pandemic storyline.

Chaidez says they already have big plans for season two, although she's leaving to launch Hunters, another Syfy show based on Whitley Streiber's Alien Hunter novels. (She describes it as "Homeland with aliens.") But she's still working as a consultant on season two, and they're planning to "open up the world of the future even more. We're going to do even more cool time travel [and] go to even more places that we haven't been before."

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I asked Chaidez if they feel intimidated by the comparison to Gilliam's iconic movie, which has such a unique and recognizable style. She says it's not as intimidating as it could be, "because the show is really a reimagining. I think if we had tried to do a steampunk aesthetic or tried to stick a bit more closely to what Gilliam had done, it would have been much, much more daunting." Having the freedom to recreate the look and feel of the storyline from scratch helped them to avoid feeling "entirely intimidated by remaking a masterpiece," she laughs.

"I feel honored to be working on the same material that someone as brilliant as Terry Gilliam also worked on," Chaidez adds.