Since there are different sources of information for The 39 Clues canon and sources may conflict with one another, the following guide is to be used on this wiki. Fan fiction (A.K.A Fanon) is not condiered a legitimate source AT ALL. It may be posted on blogs, but keep it there. Fanon includes but is not limited to: Fan made stories and fan speculation. Between everything else, The Clue Hunt, Vespers Rising, Cahills vs Vespers, Unstoppable, Doublecross, and Outbreak are considered the highest forms of canon, followed by the other books and Rapid Fire. Finally, the last form of canon are things mentioned by authors or scholastic employees elsewhere.
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