The Department 89 Personnel Files Books 1-4

The Cold War Origins of Germany’s Deadliest Intelligence Agency

Before the legend of Department 89, there were the people who built it in blood

Long before Germany’s most secret intelligence unit existed, four future agents lived through the chaos of the Cold War, betrayal, and political conspiracy — experiences that would forge them into the ruthless operatives of this explosive German espionage thriller series.

Sophie Decker. A homeless survivor of abuse and the brutal DDR streets. She joins the army, becoming a fearless female assassin in the making — a soldier who fights her own private wars long before joining Department 89.

Wolfgang Schmitz. A reluctant military policeman who uncovers his true calling: hunting saboteurs, traitors, and weapons smugglers in the shadows of a divided Europe.

Claudia Meyer. The future Chancellor of Germany. A powerful investment banker who transforms personal trauma into a crusade against corruption, greed, and political rot — setting the stage for her rise to the German chancellorship.

Hans Unterwald. From air force pilot to political kingmaker — the fixer, the strategist, the modern-day Machiavelli. But when a cache of stolen Stasi files resurfaces, Moscow’s assassins come hunting.

From Cold War Berlin to the corridors of modern power, The Department 89 Personnel Files delivers gripping spy fiction, high-stakes intelligence intrigue, and the untold origin stories of the agents who would one day change the fate of Europe.

Today’s spies were yesterday’s survivors.



★★★★★ "A thrill ride from start to finish"
★★★★★ "The books riveted me to my chair from beginning to end. The tension keeps ratcheting up every page-turn until the very satisfying end."
★★★★★ "Well written exciting books."
★★★★★ "Fast paced, well crafted, this is a great read."
★★★★★ "A wonderfully crafted action-packed story with twists and turns that keep you on the edge of your seat right to the last page."
★★★★★ “This whole series is a delight. I had to rush back to Amazon and buy up some more of O'Neill's books.”
★★★★★ “Exceptionally well written, a pleasure to read and highly recommended to anyone looking for good reading.”
★★★★★ “It's not often that I am so enthralled with a story that I read the entire book nonstop in one sitting, but it happened here.”
★★★★★ “Totally engrossing. Great read. All Dept 89 books are thrilling and non stop action. Sophie Decker is the best.”
★★★★★ "Amazingly well put together yarns that are blisteringly fast paced & very hard to put down once started.”