Sisterhood Sleuths Brings 8-Book Mystery Series to Teens and Young Adults

Upland, California author Cathy Warshaw launches a global mystery and thriller universe featuring books, an interactive magazine, audiobooks, a podcast, and mor

UPLAND, CA, UNITED STATES, August 24, 2026 /EINPresswire.com/ -- Sisterhood Sleuths, an Upland, California-based publishing brand, offers teens and young adults a global adventure that combines mystery storytelling, cultural discovery, and critical thinking. Created by author and teen empowerment coach Cathy Warshaw, the series follows two sisters, Chloe and Lily, as they investigate ancient artifacts, secret societies, and hidden histories across multiple countries. The brand includes an interactive magazine, audiobooks, merchandise, a podcast, and more.

The series begins with "The Obsidian Eye," set in the quiet town of Upland, California, where an ancient artifact surfaces alongside a long-buried prophecy. From there, readers follow the Sisterhood Sleuths to locations including Israel, Switzerland, Italy, France, Ireland, Iceland, and Japan. The eight books are titled: "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)." Three of the eight books are currently published, with the remaining titles to follow. Each book is rooted in real-world history, culture, and geography.

The two central characters bring different strengths to every case. Chloe is the fearless leader: intelligent, bold, and determined, with a focus on history and high-stakes problem-solving. Lily is driven by curiosity and urban legends, with sharp intuition and a photographic memory that helps crack difficult cases. Together, they form a team that young readers can follow and learn from across the series.

Warshaw built the series around a core idea: mystery reading helps teens develop critical thinking and confidence they will use in real life. The Sisterhood Sleuths universe is designed so readers do not simply follow along but solve, explore, and think like detectives themselves. As stated on the brand's website, "Without real mystery reading, teens miss out on building critical thinking and confidence."

The Sisterhood Sleuths Magazine is described as a global adventure hub, combining mystery storytelling with interactive puzzles, cultural discovery, and inspiring role models. Magazine members can access content, solve puzzles, and earn rewards. The first three published books are available in Spanish, broadening access for readers across different language backgrounds.

Audiobooks are also part of the lineup. The first three books are currently available in audio format, designed for listeners who want to experience the stories during road trips, late nights, or any time. The audio versions serve as another entry point into the Sisterhood Sleuths world, fitting different lifestyles and learning preferences.

The Sisterhood Sleuths Podcast takes listeners beyond the books and into self-discovery. According to the brand's website, the podcast invites listeners to "think boldly, question deeply, and become the heroes of their own stories." It continues the themes of friendship, curiosity, the tension between good and evil, and personal growth that run through the books.

Warshaw's background as a teen empowerment coach shapes the brand's overall mission. Her work is focused on empowering readers through adventure, cultural insight, and moral lessons. That purpose extends to the merchandise line, which features items carrying messages such as "Detective of My Own Destiny" and "Courage Means Doing the Right Thing Even When Hard," reinforcing the series' themes beyond the page.

Reader response has been direct. Jennifer Ferranno, a reviewer, called the series "outstanding" and described Cathy Warshaw as "the next J.K. Rowling." Jordan, age 16, said "The best mystery I've ever read."

The brand's tagline, stated on the website, captures the spirit of the Sisterhood Sleuths universe: "Secrets are everywhere. Curiosity is the key."

The Sisterhood Sleuths blog publishes content connecting the world of the books to real history and real places. Recent posts have explored Upland, California as a setting, and the ancient City of David beneath Jerusalem. These posts serve as companion content for readers interested in the history behind each story.

The three published books, the magazine, audiobooks, podcast, and merchandise are available through the official Sisterhood Sleuths website.

**About Sisterhood Sleuths**

Sisterhood Sleuths is a mystery and thriller publishing brand based in Upland, California, created by author and teen empowerment coach Cathy Warshaw. The brand offers an 8-book young adult mystery series that follows two sister sleuths across global adventures rooted in history, culture, and moral discovery. Three of the eight books are currently published, each available in both English and Spanish and in audiobook format. Products include an interactive magazine, a podcast, merchandise, and more. Learn more at www.sisterhoodsleuths.net.

**Contact:**
Sisterhood Sleuths
Upland, California
www.sisterhoodsleuths.net

Cathy
Sisterhood Sleuths
+1 323-775-7087
email us here