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The Mystery of the Midnight Signal: The Maple Street Detective Club, Book 4
Paperback
Chapter BooksGeneral Juvenile Fiction
Publisher: Independently Published
Published: Jul 20 2026
Pages: 46
Weight: 0.22
Height: 0.10 Width: 7.00 Depth: 10.00
Language: English
Three flashes. From the top of the old water tower. At eleven forty-seven on a Tuesday night.
The water tower has been empty and locked since the 1960s. Nobody should be up there. But someone is - and they are sending a signal directly at the stretch of Maple Street where the treehouse stands.
Zara opens her notebook. The club sends three flashes back.
What follows leads them to a planning notice hidden inside a locked building, a Borough Council maintenance error that nobody meant to make, a twelve-year-old boy who has been watching the club from sixty feet up for over a year - and a conversation that was long overdue.
And at the very end: the person who has been watching the club since Case One steps forward. With the fifth token. With an explanation. And with three words that close the series.
The Maple Street Detective Club, Book 4 of 4.
The series finale.
Ages 7-10.
Chapter book.
15 chapters with 5 reader puzzles.
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