Author Matthew Fitzsimmons


Book One

A breakthrough in human cloning becomes one woman’s waking nightmare in a mind-bending thriller by the Wall Street Journal bestselling author of the Gibson Vaughn series.

In the near future, advances in medicine and quantum computing make human cloning a reality. For the wealthy, cheating death is the ultimate luxury. To anticloning militants, it’s an abomination against nature. For young Constance “Con” D’Arcy, who was gifted her own clone by her late aunt, it’s terrifying.

After a routine monthly upload of her consciousness—stored for that inevitable transition—something goes wrong. When Con wakes up in the clinic, it’s eighteen months later. Her recent memories are missing. Her original, she’s told, is dead. If that’s true, what does that make her?

The secrets of Con’s disorienting new life are buried deep. So are those of how and why she died. To uncover the truth, Con is retracing the last days she can recall, crossing paths with a detective who’s just as curious. On the run, she needs someone she can trust. Because only one thing has become clear: Con is being marked for murder—all over again.

Read an excerpt
Read interviews
Read the review in The New York Times


“Maybe what we need most as this bewildering summer winds down is a diverting story about an interesting futuristic topic that injects no new anxiety into our nervous brains… [Constance] shines in its interstitial moments… In between the sleuthing and the schemes for world domination and the eluding of people with guns, we are invited to grapple with genuinely thoughtful questions about the philosophical, legal and ethical implications of cloning and scientific innovation in general… The debates around cloning in Constance echo many of our contemporary preoccupations—skepticism of science, radical mistrust of those with opposing views, conspiracy theories.”
—Sarah Lyall, Critic, The New York Times (read the full review)

“Exceptional… In this timely thriller, tantalizing clues, complex motives, and shifting views of the truth flow around such issues as the relationship between money and power, the right to life, and the definition of self. FitzSimmons has upped his game with this one.”
Publishers Weekly, Starred Review (read the full review)

“A super-brainy high-concept dystopian tale guaranteed to reward anyone who’s in the mood.”
Kirkus Reviews (read the full review)

“A propulsive sci-fi thriller that questions the very nature of what makes us human.”
PopSugar (read the full review)

“What a book! Like all the best speculative fiction, FitzSimmons’ compelling thriller Constance takes elements of real science and spins them up into a novel and terrifying premise.”
—Blake Crouch, NYT bestselling author of Dark Matter & Recursion

Constance is a blistering, balletic read—silky-smooth world-building that effortlessly grounds a wonderful, harrowing tale of mystery, suspense, identity, friendship, and redemption. This is, for all its twists, turns, and tricks, a novel that does what a novel should do—examines what makes us human after all. Genuinely one of the best books I have read in a long, long time.”
—Greg Rucka, NYT bestselling author and creator of The Old Guard


Meet the Thriller Author Podcast (2021)
Interviews with Writers of Mystery, Thriller, and Suspense Books
Listen now