The Blue Door
  • # of Books:
    7
  • First Book:
    September 2012
  • Latest Book:
    February 2014
  • Genres:
    Christian
  • Age Level:
    Middle Grade (Ages 8-12)
  • Series Rating:
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The Threshold Series in Order (7 Books)

Order Book Date Rating
0.5 (e) 4
1 3
2 4
3 3
3.5 (e) 5
3.7 (e) 4
4 4.5

Frequently Asked Questions (FAQ)

There are 7 books in the Threshold series.

The Threshold series does not have a new book coming out soon. The latest book, Garden Gate (Book 4), was published in February 2014.

The first book in the Threshold series, The Blue Door, was published in September 2012.

The Threshold series primarily falls into the Christian genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.