Books like The Whispering Room by Dean Koontz

When a murderous sociopath stalks her friends in Napa Valley, former survivor Chyna Shepherd must guard herself and an innocent stranger, risking life and sanity to confront the deadly intensity of Edgler Vess.

Landscape gardener Mitch Rafferty has only sixty hours to rescue his kidnapped wife, facing a ruthless ransom demand and a deadly confrontation that turns his suburban life into a relentless thriller.

In the secluded town of Snowfield, California, a shocking mystery unfolds after 150 people are found dead with grotesque injuries, sparking a chilling investigation into a mass murder that blurs the line between good and evil.

In Dean Koontz’s thriller "Watchers," a genetically engineered dog gains human intelligence, stirring a deadly conflict when it escapes, endangering those who cared for it and unleashing a state‑level secret.

When a sterile silver rain engulfs a quiet Californian mountain town, a couple and neighbors discover that all communication has vanished and a hidden menace now stalks them, unveiling an apocalypse that threatens the world.

A mother's nightmare returns as she discovers her children are missing in Cape Cod, Massachusetts, and must confront the shadowy figure who murdered her first children.

A psychiatric ward mystery twists into a conspiracy over a Soviet mind‑transfer procedure, as a patient claims to be former scholar Dr. Nicholas Slopen, sparking questions of identity and authenticity.

Bestselling author Cubby Greenwich faces a cruel review from the enigmatic critic Shearman Waxx, leading him into a deadly confrontation with a ruthless sociopath who threatens more than his life.

College friends Colin and Roy become bound by a dark game after Roy’s curiosity about death leads them into a terrifying conflict.

After a miraculous recovery, twenty‑two‑year‑old Bibi Blair becomes obsessed with the idea that her new lease on life was meant to save someone named Ashley Bell. Her quest throws her into a Southern California conspiracy that blurs the line between miracle and danger.

"I very much need to be dead." These are the chilling last words left by a man who had everything to live for but took his own life. In the void that remains stands his widow, FBI agent Jane Hawk, surrounded by questions destined to go unanswered unless she does what all the grief and fury inside her demand: Find the truth, no matter what. People of talent and accomplishment, people seemingly happy and sound of mind, have recently been committing suicide in surprising numbers. A disturbing pattern is beginning to emerge. Jane is determined to give up everything to find out why. And if that means going rogue and becoming America's Most Wanted, then so be it. Those arrayed against her are legion, and devoted to protecting something profoundly important-or terrifying-enough to exterminate any and all in their way. But Jane is as clever as these enemies are cold-blooded, as relentless as they are ruthless. And she is driven by a righteous rage they can never comprehend. Because it is born of love.

During World War I, Swedish naval officer Lars Tobiasson‑Svartman is dispatched to gather covert depth readings around the Stockholm archipelago, where he becomes captivated by a wild young widow, contrasting his wife’s reserved nature.

A widow confronts the secrets of her late husband as she visits the site of his fatal accident, discovering that she did not truly know him.

Una misteriosa amenaza siniestra vincula a desconocidos en Nevada, llevándolos a una carrera contra agentes despiadados que intentan silenciar el oscuro secreto que comparten.