Author Information
John McMahon's Latest Book

Newest Release

  • Bibliography:
    6 Books (1 Series)
  • First Book:
    July 2012
  • Latest Book:
    February 2025
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Full Series List in Order

Detective P.T. Marsh

1 - The Good Detective (Mar-2019)
2 - The Evil Men Do (Mar-2020)

Book List in Order: 6 titles




  • Introducing Detective P.T. Marsh in a swift and bruising debut where Elmore Leonard's staccato prose meets Greg Iles' Southern settings. How can you solve a crime if you've killed the prime suspect? Detective P.T. Marsh was a rising star on the...



  • The author of The Good Detective delivers a gripping and atmospheric new novel in which a cop takes on a harrowing new case and confronts old personal demons. What if the one good thing you did in your life doomed you to die? A hard-nosed real ...



  • An electrifying mystery featuring a troubled small-town police detective faced with three interwoven crimes that reveal sinister secrets about his community--and the deaths of his family, by the Edgar Award-and Thriller Award- short-listed author who...




  • Head Cases follows an enigmatic group of FBI agents as they hunt down a murderer seeking his own justice in this electrifying -- and commercial -- series debut.FBI Agent Gardner Camden is an analytical genius with an affinity for puzzles. He also has...




Frequently Asked Questions (FAQ)

John McMahon has published 6 books.

The next book by John McMahon, Head Cases, will be published in February 2025.

The first book by John McMahon, Jon E Bionic: The Rescue of Professor Books, was published in July 2012.

Yes. John McMahon has 1 series.