Altogether there will be four (and one unofficial) Hardy Boys trilogies by early 2009.
They are as follows:
- Bayport Corruption Storyline (unofficial; October 1987-September 1991)
- Operation Phoenix Trilogy (June 1992-August 1992)
- Ring of Evil Trilogy (June 1993-August 1993)
- Double Danger Trilogy (November 2008-March 2009)
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