Sophie Nélisse. Elliott MacDonald Logo text Sophie Nélisse, coming off of a busy winter with the release of Heated Rivalry, is preparing to head back into the wilderness for the fourth and final season of Showtime's Yellowjackets. "There's a lot of pressure coming into this season knowing it's the last one," the 25-year-old actress told The Hollywood Reporter on a Zoom call earlier this month. It's about a week out from when Nélisse is scheduled to return to the show that has, in her words, shaped her young adult life.