A Prestige Espionage Series

ZERO

MARGIN

The network wakes. The cover cracks. The doctrine takes command.

Avi Stern built a covert network meant to disappear inside ordinary life. When it reactivates after years of silence, the man who designed it becomes the target, and every civilian identity, cafe contact, and policy justification becomes part of the machine closing around him.

GenreLiterary Espionage Thriller
FormatComplete Series
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About the Series

Success. Exposure. Sacrifice.

Espionage Psychological Thriller Political Manipulation Identity & Deception

The Avi Stern Series follows a deep-cover intelligence operative who built a covert network so durable it can survive without him. Years later, that network begins to reactivate, and Avi discovers that the architecture he designed may now be pointed back at its creator.

The operation moves through ordinary spaces: civilian identities, routine transactions, and cafes that appear harmless until their pattern becomes visible. Thirty-three cafes across thirteen countries form a network hiding in plain sight, and every familiar ritual becomes a possible signal.

Across three novels, the series traces the slow erosion of certainty inside a system built on compartmentalization. Avi can no longer tell whether he is exposing a betrayal, following a contingency plan, or fulfilling a role assigned to him long before he understood the stakes.

Each book stands on its own, yet together they form a single escalating arc. The first reactivates the network and turns Avi into the target. The second buries him inside a civilian cover that has become a trap. The third follows doctrine as it hardens into algorithmic war, where stopping the machine may require destroying the assumptions that built it.

This is literary espionage grounded in psychological realism. The tension does not come from spectacle. It comes from proximity to power and from the quiet realization that institutions endure by deciding who is protected and who is spent.

The Vision

Developed as a Three-Season Prestige Series

I
Zero Margin

A dormant network reactivates after years of silence, and Avi Stern becomes the target of the architecture he built. Every signal suggests the system still recognizes him, but not as its operator. As the network closes in, he has to learn who woke it and why.

II
The Barista

Thirty-three cafes across thirteen countries reveal a covert network hidden inside civilian routine. Avi's barista identity was supposed to be a cover. Instead, it becomes the map everyone else is following, and the ordinary life around him starts behaving like an operation.

III
Black Doctrine

War becomes an algorithm, and doctrine becomes the machine that keeps it running. Former allies recalculate survival as decisions once made by people harden into automated policy. Avi has to stop a system that no longer recognizes restraint as part of the mission.

The Three Books

Shadow. Cover. Fire.

Zero Margin
Book One of Three

Zero Margin

When the network reactivates, its architect becomes the target.

Avi Stern built a covert network designed to survive silence, distance, and denial. It was meant to stay dormant until the right signal brought it back online. Years later, the signal arrives. Contacts he buried begin moving. Old channels open. Names that should have disappeared return with instructions attached. At first, Avi believes someone has stolen his architecture. Then the pattern tightens around him. The network is not simply active again. It is hunting its creator. Every safeguard he designed becomes a route to him, and every person who once depended on his system now has reason to question whether he can be allowed to live.

Reactivated NetworkCreator as TargetDouble LifeInstitutional Betrayal
HardcoverPaperbackEbook
Pre-Order Book One
The Barista
Book Two of Three

The Barista

Thirty-three cafes. Thirteen countries. One network hiding in plain sight.

Deep cover is not a disguise. It is repetition. Avi lives behind a civilian identity built on ordinary gestures: opening a cafe, remembering a regular's order, closing the register, sending nothing that looks like a signal. But thirty-three cafes across thirteen countries begin to reveal the shape of a network hidden inside routine. A cup placed wrong. A shipment delayed by minutes. A customer who appears in more than one city. The barista identity was supposed to protect him from scrutiny. Instead, it becomes the channel everyone else is using. As the pattern emerges, Avi has to decide whether his civilian life was ever shelter, or whether it was always the most efficient cover for an operation no one was meant to see.

Deep CoverCafe NetworkExposureHidden Signals
HardcoverPaperbackEbook
Pre-Order Book Two
Black Doctrine
Book Three of Three

Black Doctrine

When war becomes an algorithm, someone has to stop the machine.

The doctrine that once justified covert action has become executable logic. Targets are ranked before anyone argues. Escalation becomes a model. Risk becomes an acceptable output. What began as strategy now behaves like a machine, converting suspicion into authorization and authorization into war. Avi watches former allies defer to a system they no longer fully understand, because the algorithm gives them distance from the consequences. Stopping it means more than exposing a policy failure. It means breaking the chain of belief that lets people call the machine neutral while it chooses who can be spent. In the end, Avi is not fighting a nation. He is fighting doctrine with a trigger finger.

Algorithmic WarWeaponized DoctrineInstitutional CollapseNo Clean Exits
HardcoverPaperbackEbook
Pre-Order Book Three
Early Reader Responses

For readers of John le Carré, Joseph Kanon, and Mick Herron. A series that trades spectacle for the quiet damage of institutional betrayal.

Zero Margin feels written by someone who understands how institutions actually function under pressure. The intelligence work is not romanticized. It is procedural, political, and often quietly disturbing. What stayed with me was not the operation itself, but the realization that success can be manipulated long before the people executing it understand they are part of something larger.

Daniel M.
Former Intelligence Analyst

This series is less about espionage as action and more about espionage as erosion. Identity shifts slowly, almost invisibly, until you begin to question whether anyone in the story is operating freely. The restraint is what makes it powerful. It trusts the reader to sit inside discomfort rather than chase spectacle.

Rachel K.
Literary Fiction Editor

In the tradition of le Carré and Joseph Kanon, Zero Margin is concerned with power, loyalty, and the moral fog that settles after a mission succeeds. It does not rush toward resolution. It examines consequences. The final installment, in particular, feels less like a thriller and more like an autopsy of institutional belief.

Thomas L.
Beta Reader, National Security Background
Release

Enter the Series

Available in hardcover, paperback, and ebook editions. Read each novel independently or save with the complete series bundle. The books release in sequence, one every two weeks.

Zero Margin cover
Book One
Zero Margin
The origin.
Hardcover$34.99
Paperback$19.99
Ebook$9.99
Available Now
Order Now
The Barista cover
Book Two
The Barista
The cover.
Hardcover$34.99
Paperback$19.99
Ebook$9.99
Releases June 8, 2026
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Black Doctrine cover
Book Three
Black Doctrine
The reckoning.
Hardcover$34.99
Paperback$19.99
Ebook$9.99
Releases June 15, 2026
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Complete Series
The Avi Stern Series
All three books at a bundle discount. Choose your format.
Hardcover Box Set
Three signed first-edition hardcovers. Free shipping included.
$84.00 $104.97 individually
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Paperback Series
All three trade paperbacks. Free shipping included.
$49.00 $59.97 individually
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Digital Series
All three books as ePub and PDF. Instant delivery.
$24.99 $29.97 individually
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Zero Margin. Archive Index.
The Author

Daniel Strade

Daniel Strade is the pen name of Jacob Schlesinger, an executive operating partner who has led companies across construction, manufacturing, and private equity over the past three decades. He writes literary fiction under a separate name to keep the two callings distinct. The Avi Stern Series is published by Coby Press and follows characters who operate in the spaces intelligence services do not formally acknowledge: legacy networks, deniable assets, and the institutional machinery that outlives the policies that built it.

The series treats covert operations, political consequence, and the long arc of institutional decision-making with structural accuracy and narrative restraint. Rather than drawing on classified information or specific historical events, the work grows out of an understanding of how systems operate under pressure, how they justify risk, how they protect continuity, and how individuals reconcile loyalty with doubt.

The Avi Stern Series is his first published work. He is at work on a fourth novel.

WorkAvi Stern Series
ImprintCoby Press
Comparisonsle Carré, Kanon, Herron
Briefing

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