Dear Readers,
For our weekly newsletter about Hidden Gems, I look for the book that deserves a brighter spotlight — the one that is not on any lists but absolutely commands your attention once you read the first page. This week’s discovery is Black Sun Rising by Otho Eskin — a former diplomat and Washington insider who writes with the authority of someone who has seen the machinery of power from the inside.
At first glance, you might think you’re stepping into a traditional political thriller. You are — but you’re also getting something far deeper.
Black Sun Rising is the latest installment in Eskin’s Marko Zorn series, set against the combustible backdrop of Washington, D.C. Zorn, a homicide detective with a complicated past and a sharp moral compass, is pulled into a case that quickly spirals beyond routine law enforcement. What begins as an investigation unfolds into a chilling conspiracy rooted in extremist ideology and political manipulation.
What sets this novel apart isn’t just the pacing — though Eskin knows exactly how to build tension — it’s the authenticity. His years in the beltway give the narrative a realism that feels urgent rather than theatrical. The corridors of power, the interagency rivalries, the unspoken codes of Washington culture — they aren’t imagined. They’re rendered with the precision of his experience.
But this isn’t simply a headline-inspired thriller. Eskin explores something deeper: how extremism festers in plain sight, how institutions strain under ideological pressure, and how individuals must decide where they stand when the stakes are national — and personal.
Marko Zorn himself is a compelling anchor. He is neither superhero nor cynic. He’s thoughtful, flawed, persistent — a man navigating moral gray zones in a city built on them. In a genre often crowded with caricatures, Zorn is refreshingly human.
Why is this a Hidden Gem?
Because Otho Eskin deserves to be on more must-read lists. Because smart political thrillers that respect the reader’s intelligence aren’t has popular as they should be. Because beneath the suspense is a serious thesis on democracy, power and resilience.
Readers who appreciate the insider texture of Washington dramas — without melodrama — will find this book gripping. Those drawn to stories that feel uncomfortably plausible will find it haunting. And anyone who believes thrillers can both entertain and provoke will find Black Sun Rising deeply satisfying.
One of the great joys of curating Hidden Gems is discovering authors whose careers are steadily building through craft and credibility rather than hype. Otho Eskin is exactly that kind of writer. His work doesn’t shout. It resonates.
If you’re looking for a thriller that is intelligent, timely and grounded in real-world insight, Black Sun Rising deserves a place on your nightstand — and Otho Eskin deserves a wider audience.
That’s what Hidden Gems is all about.
Once you fall in love with Marko Zorn, you’ll want to read Otho Eskin’s other books: The Reflecting Pool, Head Shot and Firetrap. And stay tuned for the next installment, Day of Wrath, coming this summer.
Happy reading!

Meryl Moss, Publisher, BookTrib
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