The Ultra Betrayal
by Glenn Dyer
Autumn 1942. OSS agent Conor Thorn investigates the disappearance of a Swedish cryptographer stationed in Britain. When his MI6 colleague also vanishes while pursuing the code-breaker to Stockholm, Thorn uncovers a Nazi conspiracy. Suspecting the cryptographer's wife and racing against time, Thorn must prevent classified intelligence from reaching enemy hands before it compromises Allied operations and costs lives.
The Ultra Betrayal
Available wherever books are sold, in every format.
| Series | The Conor Thorn Series — Book 2 |
| Genre | WWII Espionage Thriller |
| Setting | Britain & Stockholm, 1942 |
| Formats | Hardcover · Paperback · Ebook · Audiobook |
| Box Set | Books 1–4 available for $9.99 |
WHAT READERS ARE SAYING
Brilliantly researched and filled with fascinating characters from the pages of history, Glenn Dyer once again brings World War II espionage to life in his latest Conor Thorn thriller. The Ultra Betrayal exceeds all expectations.
Jack Carr
New York Times Bestselling Author
The Ultra Betrayal is blessed with a plot that zings along like a ricocheting bullet that finds its mark in the last electrifying pages. Meticulously researched and filled with fascinating characters, this one is sure to please.
James R. Benn
Author of Road of Bones, A Billy Boyle World War II Mystery
A tantalizing premise set among the ominous atmosphere of World War II, there's sizzle and plot twists galore—more than enough to satisfy any thriller reader.
Steve Berry
New York Times, USA Today and
historically accurate, action-packed World War II spy thriller…
Indie Reader
Indie Reader
Conor Thorn is back with a vengeance in Glenn Dyer's compelling new World War II thriller, The Ultra Betrayal. History and thriller lovers alike will stay up reading late into the night until the final breathtaking twist. Don't miss this one!
Anthony Franze
Author of The Outsiders
The Ultra Betrayal is a masterful historical spy thriller where morality pushed people to their breaking points.
Foreword/Clarion Reviews
Foreword/Clarion Reviews
"Brilliantly researched thriller bringing WWII espionage to life with expectations exceeded."
PRAISE FOR THE CONOR THORN SERIES
Get Your Copy
The Ultra Betrayal is available on Amazon and Ingram Spark.
BOX SET — BOOKS 1–4
Get all four Conor Thorn novels for just $9.99—the perfect way to start the series.
GET THE BOX SET