DOUBLEHELIX
BOOK ONE IN THE HELIX PROJECT
The Helix Project puts readers in the crosshairs of espionage, ambition, and betrayal. DoubleHelix is where the bullet is chambered.
WINNER 2026 INDEPENDENT PRESS AWARD FOR POLITICAL THRILLER and WINTER 2026 PENCRAFT AWARD FOR THRILLER AUDIOBOOK
WASHINGTON D.C. - 1996
Mike Green has built a career writing about dead girls, but nothing could have prepared him for the file he stumbles on at the National Archives: the death of Delilah Grennan, a murdered Soviet dissident with ties to the Russian underworld. What begins as research becomes obsession, until her voice bleeds into his and paranoia pushes him deeper into the shadows.
Dragged into a covert war between a global crime syndicate, intelligence agencies, and a political dynasty that considers him family, Mike learns too late that the only way to survive is sometimes to be buried.
In the shadows of power, survival is never guaranteed.
Dark, suspenseful, and razor-sharp, Double Helix blends the psychological intensity of a suspense thriller with the intrigue of an espionage novel.
Anyone looking for an intricate, multi-POV thriller that will get their inner detective wheels turning and that lingers after the final page should add this one to their immediate reading list! - AudioBookFanatic
The book excels at political intrigue...The climax is a brutal and visceral payoff.-- Printed Word Reviews
Truth here isn't heroic - it burns everything it touches. This book throws you straight into that fire. No clean exits. Just consequences." --Booksterr
BINDING COIL
BOOK TWO IN THE HELIX PROJECT
The Helix Project puts readers in the crosshairs of espionage, ambition, and betrayal. Binding Coil is where the scope widens.
"Calder’s ability to weave complex characters into a web of intense action and shadowy political dealings makes this a must-read for fans of contemporary thrillers. While it draws on the intriguing plot introduced in the first book, this novel stands firmly on its own as a fast-paced, action-packed story filled with unexpected twists and turns." - Stacie Hearne, Author's Reading.
LOS ANGELES - 2001
Mike Green thought he’d left covert politics behind and built a new life. But when that new life collides with a mission under Tony McCollister's command, the threads that once only connected them now inextricably bind them together.
From Washington's secret black ops to the gritty streets of Los Angeles, both men find themselves fracturing under the truth while trying to preserve the lie.
Inside the coil of betrayal, loyalty is weaponized long before it's tested.
And the real battle is protecting life from a system designed to erase it.
COMING MARCH 2026