Sadie Sink had been on Broadway and worked alongside stars such as Naomi Watts and Helen Mirren. But playing Max Mayfield in the fourth season of “Stranger Things,” she broke through as a brave skater girl who never lets go of her Walkman, who hates pink, plays video games and is a “Dragon’s Lair” champion. Watch a video about Sink and read her full story:
AP Breakthrough Entertainer: Sadie Sink
