The Mystery of the Galilean Grindstone

Author:   Elizabeth Arthur ,  Steven Bauer
Publisher:   Hollow Tree Press
Volume:   7
ISBN:  

9781965321195


Pages:   344
Publication Date:   03 September 2025
Recommended Age:   From 13 to 18 years
Format:   Hardback
Availability:   Available To Order   Availability explained
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The Mystery of the Galilean Grindstone


Overview

The world has changed since the first time The Three Investigators went into action, but some things never go out of style. The persistence of truth. The power of perseverance. The importance of questioning everything. Conceived and co-written by Elizabeth Arthur, the daughter of Robert Arthur, the creator of the Three Investigators universe, this exciting reboot of the classic series takes its iconic characters into a new age. They return reimagined, reinvigorated, and more relevant than ever. In the seventh book of a 26-book story arc, the summer is beginning with an unusual challenge for The Three Investigators. At the end of the previous summer, Jupiter invited their new friend Mallory MacLeod to join the team as a Special Consultant. She's also been helping out at the Salvage Yard, so she, Jupiter, Pete, and Bob are all present when Uncle Titus returns from the Napa Valley with an intriguing artifact - a curious sandstone wheel. The wheel appears to be a grindstone, engraved with the birth and death dates of Galileo Galilei, the brilliant Italian inventor and astronomer with ties to the powerful Medici family. When Uncle Titus suggests the wheel could be connected to rumors of a hidden treasure, the team quickly shifts gears to investigate. They travel to the old Victorian ""calendar house"" where the wheel was found - a hotel owned by Portuguese immigrants who are unaware of the house's mysterious past. As it turns out, both the house and a nearby Franciscan monastery are brimming with Masonic symbols. The boys soon find themselves counting doors, rooms, and panes of glass, and deciphering cryptic letters in pigpen cipher that date back to 1890. When Mallory joins them and uncovers the startling connection between an ancient organization, the Illuminati, and the Masonic Order, the case takes on an added urgency. But the puzzle isn't adding up. Is the Italian stonemason, Clemente DeLuca, as innocent as he seems? Could the man writing a book about calendar houses be hiding his true intentions? Are the brown cotton robes the monks wear acting as a disguise for one of them? Locked inside the Tower Room, the team must work together to solve the mystery before it's too late. But the villains are closing in on the calendar house's secret - and they won't stop until it's theirs! Join Jupiter, Pete, Bob, and Mallory as they decode centuries-old secrets, face dangerous enemies, and reveal a long-hidden treasure in this intense new chapter of The Three Investigators series. Fans old and new will love its classic feel.

Full Product Details

Author:   Elizabeth Arthur ,  Steven Bauer
Publisher:   Hollow Tree Press
Imprint:   Hollow Tree Press
Volume:   7
Dimensions:   Width: 14.00cm , Height: 2.40cm , Length: 21.60cm
Weight:   0.544kg
ISBN:  

9781965321195


ISBN 10:   1965321194
Pages:   344
Publication Date:   03 September 2025
Recommended Age:   From 13 to 18 years
Audience:   Young adult ,  Teenage / Young adult
Format:   Hardback
Publisher's Status:   Active
Availability:   Available To Order   Availability explained
We have confirmation that this item is in stock with the supplier. It will be ordered in for you and dispatched immediately.

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Author Information

Elizabeth Arthur is the author of five literary novels (Beyond the Mountain, Bad Guys, Binding Spell, Antarctic Navigation, and Bring Deeps) and two memoirs (Island Sojourn and Looking for the Klondike Stone.) Her books have been published by Harper and Row, Doubleday, Knopf, and Bloomsbury U.K. She has received fellowships and grants from the Bread Loaf Writer's Conference, the Vermont Council on the Arts, the Ossabaw Island Project, and the Indiana Arts Commission. She twice received fellowships from the National Endowment for the Arts and was the first novelist ever given an Antarctic Artists and Writers Operational Support Grant from the National Science Foundation. Her novel Antarctic Navigation was chosen by the New York Times as a Notable Book. Steven Bauer is the author of three books for young people, the young adult fantasy Satyrday, the middle grade novel A Cat of a Different Color, and The Strange and Wonderful Tale of Robert McDoodle, a picture book in verse. Bauer's writing has received fellowships from the Bread Loaf Writer's Conference and the Fine Arts Work Center in Provincetown, Massachusetts. He has also been given grants and awards from Prairie Schooner, the Ossabaw Island Project, the Massachusetts Arts Council, and the Indiana Arts Commission.

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