John McMahon Books In OrderPublication Order of Detective P. T. Marsh BooksPublication Order of Standalone Novels7 Responses to “John McMahon”Leave a Reply
| The Good Detective | (2019) | Description / Buy at Amazon |
| The Evil Men Do | (2020) | Description / Buy at Amazon |
| A Good Kill | (2021) | Description / Buy at Amazon |
| Head Cases | (2025) | Description / Buy at Amazon |