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The Killer Mystery Trilogy is a three part mini series within the The Hardy Boys Undercover Brothers series. The first book in the series, Killer Mission, was published in November 2009.[1] Book two, Private Killer, was published in January 2010,[2] and book three, Killer Connections, was published in March 2010.

Plot summary

to be added.


  1. Killer Mission at
  2. Private Killer at

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