Who knows the secret of Mrs. Frankweiler's mixed-up art files? the Hideaways, that's who! Three-time Academy Award« winner* Ingrid Bergman joins Richard Mulligan, Madeline Kahn and newcomers Sally Prager and Johnny Doran in a charmer based on the beloved book from the Mixed-Up Files of Mrs. Basil E. Frankweiler. Prager and Doran play Claudia and Jamie, a sister and brother who run away from home to the neatest hideout ever: The Metropolitan Museum of Art. Neither imagines their expedition will plunge them into the mystery that has all New York abuzz. Everyone wants to know if the new statue of an angel donated to the museum by reclusive art collector Mrs. Frankweiler (Bergman) is a Michelangelo work. Claudia is sure that learning the answer will make her adventure a success, so she and Jamie decide to find out - even if it means (gulp!) confronting cantankerous Mrs. Frankweiler!