Secrets of the Purple Pearl

Secrets of the Purple Pearl by Kate McKinnon is a children’s book published by Little, Brown Books for Young Readers in 2025. This 256-page edition is written in English and invites readers into a summer adventure at the Purple Pearl Hotel, where the Porch Sisters find themselves entangled in a plot involving the Krenetics Research Association and their quest for a legendary source of power hidden in Lake Kagloopy.
In this engaging narrative, Gertrude, Eugenia, and Dee-Dee, along with their mentor Millicent Quibb, must thwart the nefarious plans of mad scientists aiming to resurrect their leader, Talon Sharktūth. As they embark on a quest to locate a mysterious creature known as a Shrimpmaid, the sisters uncover secrets about their origins and identities. The story combines elements of action, adventure, and humor, making it a lively exploration of family life and marine life, all set against the backdrop of a summer vacation filled with unexpected twists.
Official synopsis Publisher
The greatest adventures start with secrets.
The Porch Sisters are in trouble.
It’s summertime in Antiquarium, and everyone has flocked to the majestic lakeside Purple Pearl Hotel, including the Krenetics Research Association, a nefarious group of mad scientists. They haven’t given up on resurrecting their fearsome leader, Talon Sharktūth, and now they’re hot on the trail of the legendary Purple Pearl, a source of power that is rumored to be lost at the bottom of Lake Kagloopy.
But Gertrude, Eugenia, and Dee-Dee are on to them, plus their mentor, Millicent Quibb, has a plan! Is it a good plan? Hard to say! But it does involve finding a mysterious creature called a Shrimpmaid, boiling the lake (and everything inside it), and retrieving the pearl before the KRA gets its evil hands on it!
While Millicent and the gang work together to prevent the second coming of Talon Sharktūth, the sisters discover more secrets than they bargained for–including where they came from and who they truly are…
This is one mad-science summer vacation they’ll never forget!
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