by [Marc Brown (1998)
When Arthur and his friends ride their bikes to school, Francine is embarrassed by her hand-me-down bicycle, which used to belong to her father. It's a real clunker. But when Francine reports that the bike is stolen, her friends rally to find the thief. Will Arthur and his friends discover the true fate of Francine's bike?
Carolyn Keene
To celebrate her birthday, George is taking Nancy and Bess on a bike tour around Mystic Lake, but when their tour guide disappears and unknown adversaries steal their supplies and slash their tires, Nancy begins looking for clues.
Jean Van Leeuwen
In this story based on true events, a thirteen-year-old apprentice takes the first manned hot air balloon flight in America and gains new insight into life's possibilities.
Enid Blyton
The Secret Seven have a brand-new meeting place in a hidden cave, but somebody else has been using it too. And there are signs of a mailbag robbery! Whoever's been there, they'll return at night -- and the gang is determined to put a stop to it. They'll catch the cheeky intruder, whatever it takes.
Peter Høeg
Miss Smilla Jasperson isn't prepared to accept the Copenhagen police's verdict of accidental death when a neighbour's six-year-old boy falls from the roof of a block of flats. She's a Greenlander, and her feeling for snow tells her that the footprints in the snow are a clue to what happened.