Gertrude Chandler Warner
43) The spy game
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When the children uncover a strange puzzle in a friend's back yard, it's the start of a "spy game" leading to gold. But first they must make sense of an old photo and a riddle, and learn just who is behind this mystery within a mystery.
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A local radio station is holding the Great Detective Race, and the Boxcar Children have entered the contest! They solve riddles and search all over town for clues leading to the grand prize. But when some of the clues turn out to be fake, it's clear that someone is playing unfairly! Who could be trying to ruin the race - and why?
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The Alden children are searching for a rare comic book of their favorite superhero, Captain Fantastic. They finally find the comic and something else, too—a strange note inside, "signed" by the comic's creator. The Aldens realize the note is a fake. But when they start to investigate, the mysterious note is stolen! It looks like someone wants to sabotage a superhero. The Aldens will need their super powers of investigation to catch this comic
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