When authorities threaten to take Sophie, twelve, from Charles who has been her guardian since she was one and both survived a shipwreck, the pair goes to Paris to try to find Sophie's mother, and they are aided by Matteo and his band of "rooftoppers."

Nine-year-old Grace likes having a plan but she must find a way to be flexible and open to new ideas when she goes to Paris with her mother and has trouble getting along with her cousin, while at home her friends start the business she proposed without her.

A mysterious postcard leads Lisa and Nilly from Oslo to Paris in search of Doctor Proctor but, once there, all they find of their missing friend is a time-traveling bathtub powered by a special soap and several sinister individuals determined to do all they can to locate the eccentric inventor.

"When Colette invites her friends to come home with her to Paris for spring break, the five mice are delighted. While they're in France, they'll even get to attend Colette's fashion-designer cousin Julie's runway show at the Eiffel Tower! But soon after the Thea Sisters arrive, Julie's designs are stolen. Will the five mice be able to catch the thief in time to save the fashion show?"--P. [4] of cover.

A telegram from an unknown source is waiting for Mandie and an unexplained message has been left at the hotel. Who is so interested in what Mandie is doing? And why don't they sign their names?

Now in Paris with her parents who are filming their TV show about the world's haunted cities, Cassidy Blake (who can see ghosts) and her friend Jacob (who is a ghost) are alert for trouble, especially when the filming takes them into the underground Catacombs, the empire of the dead, where Cassidy accidentally awakens a powerful poltergeist spirit--one whose mystery she must solve before his power in unleashed on the whole city.--

France, 1783. The race is on to be the first to discover the secret of flight! Magpie is soon caught up in a world of science, spies, and unruly animals to be the first to passenger in a hot air balloon. Yesterday, Magpie was one of the best thieves in all of France. But an encounter with a boy dangling from the sky will change her life forever. And even though it ends in disaster, Magpie becomes enthralled by the idea of flying over the rooftops...