When a Vienna show horse is stolen, the Flattery siblings will stop at nothing to find the steed and solve the case

C.C. and Foghorn Flattery love traveling around the world with their dad for his freelance writing assignments. Their latest stop is Vienna—a city of beauty, culture, and of course, the Spanish Riding School. C.C. can't wait to see the famous dancing horses, but when they get to the school, they discover that one of the stallions has been stolen!

It's up to Foghorn and C.C. to track down the missing horse and return him to his rightful owners. But to do so, they'll have to escape a circus, hide out in a spooky castle, and outsmart the thieves before it's too late!