Hal Junior Books in Order
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Title
Date
FAQ
How many books are in the Hal Junior series?
4 books
When will the next book in the series be released?
No new book is currently scheduled. The latest book, The Comet Caper, was published in November 2018.
When was the most recent book released?
The Comet Caper was published in November 2018.
What was the first book in the series?
The first book in the series is The Secret Signal, published in October 2011.
What genre is the Hal Junior series?
The series primarily falls into the Science Fiction genre.
Is the Hal Junior series finished?
The series does not currently have a new book scheduled.