Three series · Twelve books · One architecture
Ancient evidence. Hidden patterns. The truth buried twelve thousand years ago — and the people willing to kill to keep it that way.
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The debut novel in The Protocol Series is now available in paperback and Kindle. Book 1 of a four-book series following NASA astronomer Daniel Mercer.
Three interconnected series spanning 2019 to 2031. Three protagonists who never meet. One architecture that only becomes visible to the reader who completes all three.
A historical novel set during the 1900 Galveston hurricane. Galveston, September 8. The deadliest natural disaster in American history. The perfect alibi.
A signal no one was meant to find.
A countdown twelve thousand years in the making.
When NASA astronomer Daniel Mercer detects an anomaly in the world's atomic clocks, he traces it to a twelve-thousand-year-old monument in southeastern Turkey — and to a classified program that has been monitoring the same signal since 1945.
With the cover-up unraveling, the anomaly accelerating, and no modern infrastructure prepared for what is coming, Daniel and archaeologist Miriam Hale race to decode what the builders of Göbekli Tepe encoded in stone: not a warning. An instruction.
Readers on The Recurrence Protocol
A debut that reads like a career's worth of craft — the kind of thriller that makes you distrust every history textbook you've ever read.
Early ReaderTaggart does what the best writers in this genre do: he makes the science feel inevitable and the history feel dangerous. I finished it in two sittings.
Early ReaderThe Recurrence Protocol sits in the tradition of Brown and Rollins but with a colder, more grounded intelligence. The architecture is unlike anything I've read in the genre.
Early ReaderThe Connected Universe
Three protagonists who never meet — except in the reader, who holds all three simultaneously. Each series is independently complete as a thriller. Together they describe something that took twelve thousand years to finish. The full architecture becomes visible only to the reader who completes all three series.
Standalone Novels
Galveston, September 1900. The deadliest hurricane in American history. The perfect alibi. A story of what catastrophe conceals — and what it cannot.
Book Page →The Author
There's a particular kind of unease that comes from realizing the past isn't settled — that the ground beneath accepted history is softer than it looks. That unease is where John W. Taggart's fiction begins.
Writing at the intersection of archaeology, science, and suspense, John builds thrillers that treat the historical record not as background but as evidence — layered, contested, and occasionally dangerous. His debut novel, The Recurrence Protocol, is the first book in a twelve-novel connected universe spanning three series. Three protagonists. Three science registers. One architecture that only becomes fully visible to the reader who completes all three.
He lives on Tiki Island on the Texas Gulf Coast, within sight of the waters that consumed Galveston on September 8, 1900 — the same waters at the heart of his first standalone novel, The Storm's Alibi.