Lovely 19++ Millie Bobby Brown Eleven Season 2. 'stranger things' star joe keery teases season 2, talks working with winona ryder. Season one of stranger things ended with eleven sacrificing herself to the demogorgon who's been terrorizing the town. Brown's involvement beyond the show's phenomenally successful first season was called into question over the summer when exec producers matt and ross duffer said eleven's return remained up in the air.