Books like Conundrum by Jeff Crook

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 boy with broken memory wakes in a stone‑walled maze, where he meets other children who call it the Glade. When the first girl arrives, secrets about survival, cooperation, and the maze’s mystery begin to surface.

During World War II, a foster girl in Nazi Germany steals books to share with neighbors and a hidden Jewish man, proving literature’s power to nourish the soul amid darkness.

In an elite New England college, a charismatic classics professor lures a group of eccentric students into obsessive study, leading them from intellectual curiosity to corruption, betrayal, and ultimately murder.

A librarian in Hell must track down restless characters from unfinished stories, while a hero tries to find his author. The stakes rise when a celestial being seeks the Devil’s Bible and threatens all realms.

In the cozy mystery "Booking the Crook," librarian Minnie Hamilton and her rescue cat Eddie patrol Chilson, Michigan in their bookmobile, only to find a customer dead and must solve the murder before her beloved program ends.

"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.

Thirty years after the fall of Chaos, Dwarf Thorbardin faces war and internal strife as the young thane Tarn Bellowsgranite seeks peace over conquest.