The Swagger Sword: Templars, Columbus and the Vatican Cover-up (Templars in America Book 8) by David S. Brody
Historians Cameron (Cam) Thorne, Amanda Spencer-Gunn, and their adopted daughter, Astarte, stumble upon a sword engraved with a map leading to a hidden treasure. The sword is possessed by Cam's childhood friend, Brian Hernan.
The search takes them to Ireland where Roberto Falconi and his "sister" Emanuela Orlandi (Emmy) live. As it turns out, Emmy is actually the daughter of Archbishop Paul Casimir Marcincus who was involved in the Vatican Bank scandal of 1982. Apparently, he was looking for a treasure that he could use to get back at the Vatican: an ancient Templar scroll directly undermining fundamental Church teachings.
Several forces are vying for the treasure: The Vatican hardliners - who will not stop at anything to keep the conservative teachings safe, including murdering Ruthie Sanders, an 80 y/o scholar.
Monsignor Marcotte - Cam's friend who wants to use the scroll to change the Church.
Rolando Falconi and his mistress Emanuela Orlandi, daughter of Archbishop Marcincus.
Who will survive and will they find the treasure and expose the Church?
Narrated from the third person point of view, this is a typical Brody Templar story. So much that at one point I had to make sure I had not read the book already. It's a fun fast read, but you are constantly being reminded of the same issues in each and every one of the books, with not much plot change to keep you interested.