The phantom violin

In Short

Set against the rugged, wild backdrop of Lake Superior’s Isle Royale, this mystery follows three young friends—Florence, Jeanne, and Greta—who decide to spend their summer living aboard an abandoned shipwreck. What begins as a solitary adventure in the wilderness quickly turns into a tense detective story involving mysterious phantom music, a threatening "head hunter," and a elusive black schooner. It is a quintessential 1930s juvenile adventure, blending the atmospheric beauty of the Great Lakes with a brisk, earnest pace that celebrates resourcefulness, friendship, and the enduring pull of the unknown.

The Story

The narrative opens on a moonlight-drenched wreck in Lake Superior, where the three girls have established a temporary, unconventional summer home. Their peace is soon fractured by the arrival of a mysterious black schooner and the haunting, ethereal sounds of a violin drifting through the night air—a "phantom" melody that captivates Greta, an aspiring musician. As the girls explore the island’s primeval forests, they uncover evidence of a deeper mystery: a discarded barrel marked with the cryptic words "A BARREL OF GOLD."

The plot accelerates as the girls encounter a series of antagonists, including a menacing man known as the "head hunter," who stalks the island and threatens the local wildlife. Florence, the group’s pragmatic leader, and her friends move between their home on the wreck and the island’s interior, dodging danger while tracking the source of the strange music. They eventually cross paths with a recluse named Percy O’Hara, a man living in solitude on Greenstone Ridge who possesses the same mysterious violin and a connection to the unfolding events.

As tensions rise, the girls are forced to confront the threat of the black schooner, whose crew is clearly searching for the same treasure the girls have only begun to fathom. The climax arrives during a violent storm, when the girls must abandon their wrecked ship and navigate the treacherous lake in a small rowboat. In the aftermath, the mystery of the gold is revealed: it was a cache of currency hidden by a wealthy man attempting to evade government regulations during a time of economic instability. The girls’ discovery of the barrel, hidden in plain sight, secures them a reward. They choose to share their bounty with the local fishing settlement of Tobin’s Harbor before returning to their city lives, their success providing the foundation for future adventures.

How It Unfolds

The ship’s ghost Three young women settle into a wrecked ship on Lake Superior, only to be unnerved by intruders who appear in the night, rattling chains and fleeing when spotted. The girls resolve to remain, treating the creaking, half-sunken vessel as their private summer sanctuary.

A phantom of the air Greta hears celestial violin music echoing through the woods, leading the group to believe a mysterious, unseen artist is hiding on the island. This "phantom violin" becomes an obsession, drawing them deeper into the island’s remote, trackless wilderness.

The head hunter The girls encounter a dangerous, unhinged man who terrorizes the island’s wildlife, forcing them to navigate the woods with caution. Their hunt for a hidden treasure leads them to cross paths with this man, who proves to be as elusive as he is threatening.

Secret of Greenstone Ridge The investigation brings the trio to a tower on the ridge, where they uncover further clues about the mysterious man and his connection to the "black schooner." Danger escalates as they realize they are being hunted, forcing them to rely on their wits to survive.

Treasure at last A massive storm threatens to destroy their refuge, forcing a final, desperate flight to safety. Amidst the chaos, the truth behind the mysterious gold is revealed, leading to a resolution that benefits both the girls and the local community.

The People

Florence serves as the group’s strong, practical backbone. A physical director by trade, she possesses a natural aptitude for navigation and survival, viewing the island as a test of character and an opportunity for "clean, clear adventures."

Jeanne is the more intuitive and imaginative member of the trio. Possessing a flair for the dramatic and an interest in the history of the island, she is the first to sense the "impending disaster" that haunts the group’s journey.

Greta is the youngest and most artistically inclined. Her deep love for the violin makes her the primary audience for the "phantom" music, and her bravery in the face of the unknown—such as when she climbs a tree to escape a moose—drives much of the group’s exploration.

Percy O’Hara is the mysterious, gray-haired recluse living on Greenstone Ridge. He acts as a bridge between the girls and the island’s secrets, his violin playing serving as both a lure and a guiding light.

The head hunter provides the story’s primary source of visceral danger. He represents the selfish, destructive element of the wilderness, contrasting with the girls’ desire to study and appreciate the island’s history and natural beauty.

In Its Own Voice

“In that white dressing gown with your golden hair flying in the moonlight, you look just like a ghost.”

Florence teases Jeanne after the latter accidentally startles two intruders while exploring the deck of their wrecked summer home at night.

“And just think! Thousands of people have walked this deck, thousands upon thousands!”

Jeanne reflects on the history of the ship, highlighting the eerie, melancholic atmosphere that pervades their new, secluded living quarters.

“It’s a phantom, a phantom of the air!”

Greta describes the mysterious, celestial violin music she hears echoing through the forest, which becomes a central obsession for the group.

What It's Really About

At its heart, this is a story about the transition from childhood to independence. The girls are not merely playing at being adults; they are actively testing their autonomy in an environment where they must manage their own food, shelter, and safety. The book argues that true growth comes from "clean, clear" experiences—working with one’s hands, studying history on the ground, and navigating uncertainty without adult oversight. It contrasts the girls' productive, inquisitive approach to the island with the destructive greed of the "head hunter" and the illicit schemes of the treasure-seekers, suggesting that wealth is most meaningful when it is earned or shared for the benefit of others rather than hoarded for private gain.

Why Read It Today

Readers will enjoy this book for its vivid, atmospheric setting. The author has a gift for describing the sensory details of Lake Superior—the "bottle-green" bays, the "primeval" forests, and the sudden, violent shifts in the weather. It feels like a genuine, old-fashioned escape, capturing a specific, romanticized view of wilderness adventure that is rarely seen in contemporary fiction.

However, a modern reader must be prepared for the stylistic hallmarks of the 1930s. The dialogue is often breathless and earnest, and the plot relies heavily on the "damsel in distress" tropes of the era, even when the female characters are presented as capable and athletic. There are also moments where the narrative takes for granted the prevailing period attitudes toward "gypsies" and "tramp" figures, which reflect the prejudices of the early 20th century. If one can navigate these period limitations, the book offers a charming, fast-paced mystery that remains deeply invested in the bond of female friendship. It is an ideal read for those who enjoy stories about girls taking charge of their own destinies in the great outdoors, leaving the reader with a lasting impression of the island’s quiet, haunting beauty.