John marrs Books
Deep in the Water Series

Dead in the Water – 2026
After surviving a near-drowning, Damon sees his life flash before him—all memories clear except one: a dead boy he doesn't recognize. Obsessed with the vision, he repeatedly risks death to uncover the buried truth, enlisting a stranger's help in this chilling psychological thriller.
The Dark Future Series

The One - 2016
The One is a psychological thriller exploring a world where a DNA test can identify one’s perfect soulmate. Five characters take the test, leading to shocking revelations, obsession, and danger. As secrets unravel, love and trust are tested, proving that destiny isn’t always perfect.

The Passengers - 2019
In a near-future, eight passengers are trapped in hacked self-driving cars, part of a deadly game streamed live. A mysterious hacker reveals their secrets to the public, while a jury decides their fate, exposing moral dilemmas and society’s dark side in this gripping sci-fi thriller.

The Minders - 2020
The Minders is a tech-thriller set in a near-future where government secrets are implanted into five individuals' brains, making them "Minders." As they go on the run, hunted by dangerous forces, their pasts and the risks of their knowledge threaten their survival in this gripping sci-fi mystery.

The Marriage Act - 2023
In dystopian Britain, "The Sanctity of Marriage Act" rewards married couples with benefits and monitors them via smart technology. Surveillance, psychological manipulation, and dark secrets unravel as characters navigate love, control, and government overreach in this chilling thriller exploring societal pressures and personal betrayals.

The Family Experiment - 2024
In a future UK facing overpopulation and economic crisis, many can't afford children. To address this, a company offers virtual children accessed via VR. They launch a reality show, "The Family Experiment," where participants raise virtual kids from birth to 18 in nine months, competing for a chance at a real child.
Standalone Novels

The Wronged Sons - 2013
The Wronged Sons is a psychological thriller about Catherine, whose husband, Simon, mysteriously vanishes. Years later, he returns, revealing shocking reasons for his disappearance. As dark secrets unravel, Catherine questions everything she knew about their marriage. The novel explores betrayal, obsession, and the devastating impact of long-held secrets.

Welcome To Wherever You Are - 2015
Welcome to Wherever You Are is a psychological thriller about eight strangers staying at a Los Angeles hostel, each hiding dark secrets. As their lives intertwine, past traumas, hidden identities, and dangerous connections surface, leading to shocking revelations and deadly consequences in this gripping, character-driven mystery.

The Good Samaritan - 2017
The Good Samaritan is a psychological thriller about Laura, a woman who volunteers at a suicide helpline but manipulates callers into ending their lives. When Ryan, whose wife died after speaking to Laura, investigates her motives, he uncovers dark secrets, leading to a tense and deadly confrontation.

Her Last Move - 2018
Her Last Move is a gripping psychological thriller following Detective Sergeant Becca Vincent and facial recognition expert Joe Russell. As they hunt a ruthless serial killer targeting seemingly unconnected victims, dark secrets emerge, putting them in grave danger. Twists, betrayals, and shocking revelations lead to a thrilling climax.

What Lies Between Us - 2020
What Lies Between Us is a psychological thriller about a toxic mother-daughter relationship. Maggie and Nina live together, but Maggie is imprisoned in the attic. As dark secrets unravel, shocking revelations about their past emerge, exposing betrayal, manipulation, and twisted revenge in a gripping, suspenseful narrative.

Keep It in the Family - 2022
Keep It in the Family is a psychological thriller about Mia and Finn, a couple who buy a fixer-upper house. While renovating, they discover a chilling secret—evidence of past murders hidden within the walls. As they investigate, dark family secrets unravel, revealing shocking truths and deadly consequences.

The Stranger in Her House - 2024
Connie returns to care for her dementia-stricken mother, Gwen. When Paul, a man overly involved in Gwen’s life, raises Connie’s suspicions, she fears he’s manipulating her mother. As his influence grows, Connie uncovers dark secrets, leading to a tense psychological battle in this gripping thriller.

You Killed Me First - 2025
In You Killed Me First, three women—Margot, a faded TV star; Anna, her long-suffering friend; and Liv, a glamorous newcomer—form a seemingly perfect friendship, each concealing dark secrets. As tensions rise over eleven months, their facades crumble, leading to a deadly confrontation on Bonfire Night.