Hidden Nature is a standalone romantic suspense novel by #1 New York Times bestselling author Nora Roberts, published by St. Martin's Press (Macmillan) on May 27, 2025. The 435-page hardcover follows Sloan Cooper, a corporal in Maryland's Natural Resources Police, who is shot during a convenience store robbery after taking down a trio of criminals preying on hikers in the Western Maryland mountains.

After being shocked back to life on the operating table, Sloan faces a long recovery and moves back to her parents' home in the small mountain town of Heron's Rest. When a woman vanishes from a supermarket parking lot, Sloan's investigative instincts kick in, and she uncovers a disturbing pattern of disappearances spread across three states. Men and women, old and young, the missing seem to have nothing in common, yet the abductions keep happening.

With a new romantic interest who shares her passion for solving the mystery, Sloan must summon every ounce of endurance to get to the dark heart of this bizarre case, even if it means risking her life again. The novel blends romance, mystery, and thriller elements in Roberts' signature style. Also available as an audiobook narrated by January LaVoy.