"It's showtime when Christina, Grant, Mimi, and Papa head for Hollywood, California and run into a mystery complete with Hollywood glamour, historic handprints, a 'waxy' museum, and...what's that shaking...is it an earthquake???"--P. [4] of cover.
A trip to see the dinosaurs at the Field Museum uncovers a mystery that sends four kids all over town trying to learn about Chicago's past in order to solve the mystery and save the dinosaurs.