Sitting in her school English class, Aurea's mind is usually anywhere but on the lecture. But when a shadow flickers outside the classroom window, her focus instantly shifts. Expertly rappelling down the face of the grand, decaying building across the street, a mysterious figure disappears into a third-story window.

Driven by relentless curiosity, Aurea sets out after school to uncover who the intruder is and what secrets are hidden inside the old structure. She has no idea she is stepping directly into the crosshairs of a deadly, high-stakes world.

Inside the abandoned walls, a former Marine officer turned high school principal has established an illicit growing operation, cultivating a deadly new hallucinogenic mushroom ten times more potent than cocaine. As the Chicago Mafia and Mexican cartels seek total control of the drug, Aurea's investigation ensnares her in the middle.

When a brutal firebombing razes the facility, trapping her inside the burning ruins, Aurea must draw on every ounce of resilience to survive. Unraveling the truth pushed her to the absolute edge of existence-and saving her will take a miracle delivered by the most unexpected ally in her life.

Undetected is the thrilling twenty-fifth installment in Ron Mueller's beloved Alex Evercrest series. Blending explosive suspense, urban criminal conspiracy, and deep human connection, this novel delivers a gripping tale where survival hinges on the enduring truth that goodness is an investment that never fails.