This month, Clarke, a self-described “achievement junkie,” joins the rapidly expanding Star Wars universe in Solo, a highly scrutinized origin story for Harrison Ford’s Han Solo. Her well-honed gift for concealing every detail about her work—“Everything in my life is a spoiler,” she says—helped her get into character. Director Ron Howard, a Game of Thrones fan, explains that Qi’ra, Han Solo’s childhood friend turned unreliable ally, is secretive, slippery, and morally questionable—“a much different sort of a character” from Daenerys.

If Solo becomes a major hit, it will give Clarke a rare chance to leap cleanly from one spectacularly successful genre franchise to another. But even if it doesn’t, she has no shortage of options. An active participant in Time’s Up, she has ambitious plans to write and produce her own material—and create new opportunities for other women in the industry. Discussing those issues, she begins to sound more like the fiery Daenerys. “It becomes harder to separate you from the role when you’ve been with it so long,” she admits.

Eight years ago, Dan Weiss and David Benioff were in trouble. Their pilot for Game of Thrones, an adaptation of George R. R. Martin’s popular A Song of Ice and Fire book series, was a disaster. Along with re-shoots, the pair were looking to re-cast a few key roles, including the pivotal part of Daenerys Targaryen. Tall, willowy, and fair-haired, Tamzin Merchant, the actress originally cast as Khaleesi, was a far more conventional match for the character on the page. The second time around, Weiss and Benioff took a fresh look at the character.

“Emilia was the only person we saw—and we saw hundreds—who could carry the full range that Daenerys required,” the pair explained in tandem via e-mail. “Young actors aren’t often asked to play a combination of Joan of Arc, Lawrence of Arabia, and Napoleon.”

When Clarke started on the series, Daenerys was downtrodden, occasionally objectified, and stranded in a subplot that kept the character geographically distant from the main story and the actress isolated from most of her co-stars. “I was cut off from the rest of the cast,” Clarke says. Over the years, as the famously cutthroat Throneshas thinned its sprawling ensemble, Clarke has risen in the ranks, snagging the show’s flashiest, most empowering moments.

In an era when network and streaming platforms alike are struggling to get anyone to tune in, Game of Thrones has become one of the last surviving holdovers from the must-see TV era. For a handful of weeks every year, HBO owns Sunday nights, with devotees watching live to avoid spoilers at the office Monday morning. Clearing its own very high ratings bar, Thrones commanded an average of 32.8 million viewers in its 2017 season. Its 38 wins make it the most-awarded scripted-TV series in Emmy history.

That glaring spotlight has made Daenerys a cultural touchstone—not to mention a costume-party staple, with Madonna, Katy Perry, Khloé Kardashian, and Kristen Bell among her many famous impersonators. At a recent charity auction, Brad Pitt offered six figures to spend an evening with Clarke and Harington, only to be outbid. Last year, Daenerys finally powered into the heart of the series, earning long-awaited screen time with Harington and the rest of the surviving stars. Clarke, who has been nominated three times for best supporting actress at the Emmys, may soon be gunning for lead honors.

“Everything in my life is a spoiler,” Clarke says.

Clarke’s upbringing in the bucolic countryside an hour outside of London couldn’t be farther from the dysfunctional family dynamics that forged the orphaned Daenerys. Emilia’s mother, Jennifer, is a businesswoman who currently runs the Anima Foundation, a charity aimed at raising awareness of specialty brain-injury care, and her father, Peter, was a theatrical sound engineer who prized education above all else. “Your bookshelf should be bigger than your TV,” he liked to remind Emilia and her older brother, Bennett. “My mum, my brother, my dad, and I would sit around a table, and my happiest place was just discussing stuff,” Emilia says. “I really value intelligence. I’m one of the very fortunate few people who really likes their family. I just like hanging out with them.”