
Age: 24
female
Sadie Elizabeth Sink (born April 16, 2002) is an American actress. She began her acting career in theatre, playing the title role in the musical Annie (2012–14) and young Elizabeth II in the historical play The Audience (2015) on Broadway. In 2016, she made her film debut in the biographical sports drama Chuck. Sink had her breakthrough portraying Max Mayfield in the Netflix science fiction series Stranger Things (2017–2025) and received critical acclaim for her performance in its fourth season. In 2021, she appeared in the horror film trilogy Fear Street and played the lead role in Taylor Swift's short film All Too Well. She then starred in Darren Aronofsky's psychological drama The Whale (2022), for which she received a Critics' Choice Movie Award nomination. Sink returned to Broadway in 2025, starring in the play John Proctor Is the Villain and earning a nomination for a Tony Award for Best Actress in a Play; the second youngest woman to achieve such.

In Our Little Secret, the Sinclair family reunion, intended to commemorate the death of patriarch Bernard, quickly spirals into chaos as long-buried secrets emerge. The central characters, a web of interconnected relatives and their partners, are drawn into a series of psychological games, manipulations, and murders. Bernard’s mysterious death triggers a deadly chain of events, revealing deep-seated grudges, hidden affairs, and shocking betrayals. As secrets unfold, the story becomes a tense thriller where no one is safe, and everyone has something to hide. The mounting paranoia among the family members leads to fatal consequences as they turn on one another, each desperate to protect their own twisted truths.
