The Black Silent

Coming in July 

Sam Wintripp tracks a missing scientist who is on the verge of creating the fountain of youth„that could also wipe out all human life.

The Black Silent is the third Sam Wintripp novel, following Overfall.

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Prologue„An attempted murder underwater reveals a sinister plot

Unacceptable Risk

Now Available 

Sam Wintripp, a half Tilok Native American espionage expert, must foil a double plot to unleash a deadly brain-altering genetic vector into U.S. cities and a potent electronic virus into the worldÍs interconnected computer systems.

A powerful and potentially dangerous form of biotechnology has fallen into the hands of a terrorist mastermind. With it he plans to use microscopic vector particles developed originally for therapeutic purposes to make genetic modifications in humans on a large scale. The unlucky victims become senselessly violent until they die 48 hours later. Sam fears that the simultaneous outbreak of random violence and a massive attack on essential US computer systems will destabilize financial markets, a circumstance that will allow anyone with advance knowledge to make huge profits.

A crack team of high-tech experts tracks the plots' mastermind through cyberspace while Sam pursues him across the continent. The fate of millions of people depends upon their success.

Unacceptable Risk is the second Sam Wintripp novel, following Overfall.

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Chapter 1„A platoon of mercenaries disturb the peace around Sam's mountain cabin. Sam must discover who wants him dead, and why.

Overfall
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Travel to the islands off British Columbia, the forests of Borneo, and the island of Manhattan in Dun's third adventure novel. 

After a risky water rescue, a pair of unlikely allies find themselves embroiled in a plot to turn the latest advances in gene therapy to deadly use. As the plot twists and turns, readers will be pulled into a thriller as gripping as the whirlpool currents that give the book its name.

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Chapter 1„Sam Wintripp, cousin of Necessary Evil's Kier, settles in for a relaxing vacation on his yacht.
Chapter 2„Sam's calm is broken by an unknown woman's desperate dash for the safety of his boat. 

At The Edge
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Deep in a redwood forest lies a deadly secret that two sworn enemies—joined in an extraordinary mission—must uncover to survive.

Dan Young, a big city corporate attorney, and Maria Fischer, an environmental activist and attorney, are professional rivals whose disagreements have recently threatened to spill over into personal animosity. The philosophical rift between them is profound, but their adversarial relationship is turned upside down when Dan's client sends him on a bewildering mission—to hand-deliver $500,000 in cash to Maria Fischer.

A simple plan gone awry

Excerpts
Prologue
Chapter 1
Chapter 2

A USA Today National Bestseller!
Necessary Evil

A private jet crashes in the snowbound mountains of northern California, bringing with it a plane full of exotic toxins, paramilitary shock troops, and a blizzard of death.

Kier Wintripp, a renowned veterinary doctor and Tilok Indian, and Jessie Mayfield, a big city FBI agent, are brought together when the thunderous crash draws them into the forest to investigate. There they discover the twisted remains of a corporate jet and nine bullet-riddled bodies bearing silenced weapons. The jet's cargo: a secret so astounding that its owner will do anything to protect it...

A villain with the cunning of Machiavelli

Excerpts
Chapter 1

Character Profiles
Kier Wintripp
Jessie Mayfield
Grandfather, a.k.a., Stalking Bear

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