Emily and Alexander search for a fortune in gold in a castle that may be haunted.
The skies are anything but friendly when Emily and Alexander discover a plot to sabotage a zeppelin.
Someone has drawn a mustache on the Mona Lisa! Emily and Alexander search the Louvre Museum for clues to find the dirty rat who is defacing priceless works of art!
All aboard for a high-class mystery as Emily and Alexander try to discover who is stealing jewels from the passengers aboard the famed Orient Express train.