The Amazing Adventures of Mary-Kate and Ashley (G, 2000)

Parents need to know that this feature is perfect for grade-schoolers, who will enjoy the kid-friendly locales (most preteens find this too juvenile). Each mystery does a good job of exploring its locale, and there's enough suspense to keep viewers interested, but not frightened. Extensive NASA footage and an interview with Alan Bean makes the second episode a particularly educational one. Watch out for the musical numbers. And parents should be warned: "The Case of the Sea World Adventure" is likely to inspire kids to ask for a trip to the theme park, and "The Case of the Hotel Who-Done-It" requires parents to warn kids that phone calls from hotel rooms and mini bar refreshments require parental permission.