Watch Xavier Riddle and the Secret Museum Season HD Full Free on solarmovie.do. Watch Xavier Riddle and the Secret Museum tv series online free. Xavier Riddle and the Secret Museum is an animated adventure-comedy for kids 4-7 inspired by Brad Me...Xavier Riddle and the Secret Museum is an animated adventure-comedy for kids 4-7 inspired by Brad Meltzer and Chris Eliopoulos's best-selling kids book series, Ordinary People Change the World.