Sisterhood Sleuths launches 8-book mystery universe for teens

Sisterhood Sleuths, an Upland, California publishing brand created by Cathy Warshaw, is rolling out an eight-book mystery series plus magazines, audiobooks, a podcast and merchandise aimed at teens and young adults. Three books are already out, with the brand pitching the franchise as a way to build critical thinking through interactive, history-rich storytelling.

Why it matters: - Sisterhood Sleuths is trying to turn mystery reading into a broader teen engagement brand. - The series is built to mix entertainment with cultural history, geography and problem-solving. - The franchise is meant to reach readers across formats, including books, audio, print and digital extras.

What happened: - Cathy Warshaw, an author and teen empowerment coach in Upland, California, launched Sisterhood Sleuths as a global mystery and thriller universe. - The story follows sisters Chloe and Lily as they investigate artifacts, secret societies and hidden histories in multiple countries. - The eight-book series starts with The Obsidian Eye and continues through titles set in Israel, Switzerland, Italy, France, Ireland, Iceland and Japan. - Three of the eight books are already published, with the remaining titles still to come. - The brand also includes an interactive magazine, audiobooks, a podcast, merchandise and companion blog content.

The details: - The book list includes The Obsidian Eye; The Land of Promise (The Seven Seals); The Swiss Enigma (Secrets of the Alps); Whispers in the Catacombs (Uncovering Naples' Deep Mysteries); The Louvre Enigma (Deciphering Codes Among the Masterpieces); The Celtic Mask (Shadows of the Emerald Isle); The Northern Code (Secrets of the Midnight Sun); and The Dragon's Awakening (A Tale of Ancient Secrets and Modern Threats). - The first book is set in Upland, California, where an ancient artifact appears alongside a long-buried prophecy. - Each book is rooted in real-world history, culture and geography. - Chloe is positioned as the bold, history-focused leader who handles high-stakes problem-solving. - Lily brings curiosity, urban-legend interest, sharp intuition and a photographic memory. - The first three published books are available in Spanish. - The first three books are also available as audiobooks. - The magazine is described as a global adventure hub with puzzles, cultural discovery and role models. - Magazine members can access content, solve puzzles and earn rewards. - The podcast extends the brand's themes of friendship, curiosity, good versus evil and personal growth. - The merchandise line includes items with messages such as "Detective of My Own Destiny" and "Courage Means Doing the Right Thing Even When Hard." - The blog connects the stories to real history and real places, including Upland and the City of David beneath Jerusalem.

Between the lines: - Warshaw is framing mystery fiction as a tool for building confidence and critical thinking, not just as a reading product. - The multi-format rollout suggests the brand is aimed at keeping readers inside the same universe across books, audio and community-style content. - The Spanish editions and audio versions point to a wider audience than a standard print-only YA series. - Reader reactions quoted in the release position the series as already resonating with some fans, though those comments are promotional rather than independently verified.

What's next: - The remaining five books in the series are expected to be published later. - Sisterhood Sleuths says its books and companion products are available through the official website. - The brand is likely to keep expanding its audience through new podcast episodes, magazine content and blog posts.

The bottom line: - Sisterhood Sleuths is launching as a cross-platform teen mystery brand built around global settings, moral lessons and interactive reading.