Sophie Turner has spent the first part of her career coming of age—initially in her phenomenal work as Sansa Stark on Game Of Thrones, then in her far more uneven turn as Jean Grey in the X-Men film series. Even her highly public pop-star marriage and divorce felt like it had the beats of a coming-of-age story, with eternal teen-girl icon Taylor Swift swooping in to save the day. Now, however, Turner is firmly entering her grown-up era with Joan, a British-American co-production loosely inspired by a real-life 1980s jewel thief named Joan Hannington. The story of a young mother stepping into her power, Joan is rooted more in crime-thriller tropes than young-adult ones. And while the series as a whole lacks a certain spark, it provides a strong platform to launch the next phase of Turner’s career.