Xavier Riddle and the Secret Museum is an animated children's television series that premiered on November 11, 2019, on PBS Kids. The series is produced by 9 Story Media Group. It is based on the children's book series written by Brad Meltzer and Chris Eliopoulos, named Ordinary People Change the World. The series involves Xavier Riddle with his sister Yadina, and their friends Brad and Berby, at the Secret Museum, and help from historical heroes, who are depicted in the series as children.

Brad Meltzer is an American novelist, non-fiction writer, TV show creator, and comic book author. His novels touch on the political thriller, legal thriller and conspiracy fiction genres, while he has also written superhero fiction for DC Comics and a series of short biographies of prominent people for young readers.