
By Gertrude Chandler Warner, David Cunningham (Illustrator)
Book #18 in the The Boxcar Children series
Four children visit a science and hobby fair and become involved in a mystery surrounding a polluted river and a paint factory.
Stranded by a storm, the Boxcar Children find themselves at a bus station where a mystery unfolds. With a polluted river, two peculiar boys, and a suspicious manager, the siblings must unravel the truth. Can they solve the puzzle before it's too late? Join them on this thrilling adventure filled with intrigue and unexpected twists.
A puzzle in relationships concerns two boys ejected from the bus station.
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