Investigators of the Unknown Books in Order
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Title
Date
FAQ
How many books are in the Investigators of the Unknown series?
4 books
When will the next book in the series be released?
No new book is currently scheduled. The latest book, Angela's Aliens, was published in September 1996.
When was the most recent book released?
Angela's Aliens was published in September 1996.
What was the first book in the series?
The first book in the series is The Gold Dust Letters, published in April 1994.
What genre is the Investigators of the Unknown series?
The series primarily falls into the General Fiction genre.
Is the Investigators of the Unknown series finished?
The series does not currently have a new book scheduled.