The Mysterious Benedict Society is an American mystery adventure television series based on the children's books by Trenton Lee Stewart. The series stars Tony Hale as Mr. Benedict, who gathers four children to stop a global emergency. Hale also portrays Benedict's twin brother, Mr. Curtain, who is the founder of the school the children infiltrate. The first season premiered on Disney+ on June 25, 2021, and consisted of eight episodes. In September 2021, the series was renewed for a second season. The second season premiered with two episodes on October 26, 2022, after their linear premieres on Disney Channel the day before. In January 2023, the series was canceled after two seasons. The series was removed from Disney+ on May 26, 2023, as part of a cost-cutting initiative by Disney CEO Bob Iger, rendering it lost media by legal means.