The Mystery Girl-- Mimi, Papa, Christina and Grant aboard-- travels to the historic country of Greece. The wonders of the ancient world soon turn to a wickedly awful mystery! Trek along to the Acropolis in the moonlight! A museum where Grant loses his 'marbles.' Wake up in a volcano's caldera! Get lost in the caverns of the Meteora! Decipher clues in Greek! Spend the night in Socrate's Prison! And much more as you help solve the mystery and the curse...

Mimi and Papa speed away to London, England in their little red and white airplane, The Mystery Girl. Tagging along are grandchildren Christina, 10, and Grant, 7. Mimi, a children's mystery book writer, has an appointment with the Queen! Papa is headed for the Rosetta Stone. The kids are supposed to go to the Tower of London and "behave themselves." But, uh-oh, Grant spots a big problem with Big Ben ... and he and his sister, along with their two...