Books like The third gate by Lincoln Child

Dan Brown’s thriller follows symbologist Robert Langdon and cryptologist Sophie Neveu as they race through Paris to solve a murder at the Louvre, uncovering a conflict between the Priory of Sion and Opus Dei over a controversial religious secret.

A modern coming‑of‑age fantasy that follows Quentin Coldwater as he discovers a secret college of magic and the darker truth behind his beloved fictional world, Fillory.

Don Tillman, a genetics professor with Asperger’s, designs a scientific survey to find a wife, only to meet Rosie Jarman, a drinker and late arriver who challenges his controlled worldview and leads him to discover that love can’t be measured.

A former lover’s passion turns to obsession when a college professor discovers the truth behind his ex’s vanished life, forcing him to confront a mystery that endangers his own existence.

FBI agent John Corey and his wife, Kate, hunt the terrorist who detonated the USS Cole in Yemen, uncovering a tangled web of espionage and revenge.

Sonia, Rye, and their brothers face perilous trials behind golden and silver doors, while Weld remains threatened by the skimmers. They must brave an ancient wooden door in a desperate attempt to save their world.

A SIGMA Force mission turns deadly when rogue scientists unleash a bioengineered threat linked to an ancient Delphi relic, forcing a race to stop a plot that could doom a quarter of humanity.

When a young assistant pastor discovers his ex‑fiancée is the first victim in a string of ritualistic murders, he must confront faith, demonic threats, and ancient secrets in a harrowing hunt for the killer.

A thrilling adventure in a walled city under siege by ferocious monsters, where young brothers must set out to find their missing brothers before it's too late.

A frantic hunt in London as former Royal Military Police Sergeant Dan Carter leads Private London to stop a killer abducting young women, while his past connections threaten to surface.

"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.

In 1920, Private Investigator Isaac Bell battles Bolshevik saboteurs and high‑speed bootlegging as he seeks justice after his friend is killed during a raiding chase.

When a blood‑shed bank robbery at the Monaco Grand Prix drains a corporation’s funds, Juan Cabrillo teams up with an ex‑CIA ally to chase a rogue hacker and a former Ukrainian naval officer, uncovering a centuries‑old plot that could collapse global economies.

In 1914, a British archaeologist unearths an Assyrian palace on the brink of destruction by a Baghdad railroad while American geologists and other adventurers vie for control of Iraq’s secret oil fields.

When a clandestine group of scientists called the Immari unearths relics from an ancient enemy, humanity faces certain extinction. Only a genetics doctor and a secret agent can race against time to discover the fabled Atlantis Gene and halt the catastrophe.