Books like Big Dark Sky 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.

With a rare gene that renders him hypersensitive to light, Christopher Snow navigates the shadows of Moon Bay, California, until a series of sinister events forces him to confront danger and the town’s hidden truths.

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.

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.

Amy Redwing, founder of a Southern California golden retriever rescue, puts her life on the line to save a remarkable dog named Nickie, sparking a bond that turns eerie as suspicious events begin to unfold.

LIKE A SHOWDOWN IN THE OLD WEST...THERE WOULD BE ONLY ONE MAN STANDING WHEN THE DUST CLEAREDThere was a standoff brewing between Dillon Savage and cattle inspector Jacklyn Wilde. Toe to toe, they were an equal match, but together they were an imperfect pair. After four long years, they were hitting the open range again, to bring justice to a lawless land.Attached at the hip until a rustling ring was busted, they had to make the best of a bad situation. But the real trouble was Dillon Savage. The cowboy was as cocksure and adventurous as ever. He had old scores to settle, and Jacklyn was there to make sure he didn't stray from his path. Only she didn't know that she was first in line....

"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.

A rancher and his rancher wife decide to take on a teenage couple in Montana, but their plans unravel with unexpected consequences.