The Secret Signal
  • # of Books:
    4
  • First Book:
    October 2011
  • Latest Book:
    November 2018
  • Age Level:
    Kids (12 & Under)
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The Hal Junior Series in Order (4 Books)

Order Book Date Rating
1 0
2 0
3 0
4 0

Frequently Asked Questions (FAQ)

There are 4 books in the Hal Junior series.

The Hal Junior series does not have a new book coming out soon. The latest book, The Comet Caper (Book 4), was published in November 2018.

The first book in the Hal Junior series, The Secret Signal, was published in October 2011.

The Hal Junior series primarily falls into the General Fiction genre.
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