The Obsidian Eye: A Young Adult Mystery Thriller (Secret Societies and the Sisterhood Sleuths) by Cathy Warshaw

In The Obsidian Eye, 20-year-old Chloe and her 18-year-old sister Lily live quiet lives in Upland, California—until a mysterious object is discovered in their school’s library archives. The artifact, a black stone etched with ancient symbols, triggers a chain of events that unveils a powerful secret buried for centuries. As they decode the markings, the sisters uncover ties to a long-hidden network called The Society—a global organization bent on rewriting history to serve its own agenda. Teaming up with a group of brilliant young minds—including Gil, a former Israeli special forces operative; Luca, a charming Italian hacker; Yuki, a robotics engineer from Japan; and others—they begin unraveling a trail of clues that lead them to encrypted scrolls, coded books, and a forgotten underground chamber. But they’re not alone. The Society is watching, and they’ll do anything to protect their secrets—even if it means silencing the sleuths for good. Amid growing danger, shifting loyalties, and emerging truths, Chloe and Lily must rely on each other and their newfound allies to stay alive. Along the way, they learn lessons in trust, courage, and resilience—discovering that real power lies not in ancient relics, but in the strength of those brave enough to seek the truth. The Obsidian Eye sets the stage for a globe-spanning eight-book series steeped in history, mystery, and empowerment. With each book unfolding in a different international location, this series brings readers on a high-stakes journey to stop The Society—before the past, present, and future are rewritten forever.