The Last Labyrinth Summary: Merlin’s Sister & a Song to Save Earth

A sixth-century memoir by Gwynedd, twin sister of Merlin, has been sent from England’s Liron Institute with instructions that it belongs to her.

That afternoon, Magellan performs as a harpist at a costume wedding in Lower Manhattan. Mid-celebration, news breaks that Earth’s magnetic poles are breaking and flipping.

As guests stampede into a hurricane-force storm, she sits at the church pipe organ and plays Bach.

The music’s exact mathematical frequency unlocks a doorway along an ancient Ley Line. Magellan falls through spiraling light and wakes inside the Hereford Labyrinth, a stone-and-hedge maze on a rundown English manor.

She is found by Rhys Sherwood, the young Earl of Liron. His father Godwin has just died in a laboratory accident, leaving the estate in debt, and Rhys is hosting a two-week matchmaking party to find a wealthy bride.

Rhys and his mother, Countess Birgit, take the stranger in. Birgit quietly hands Magellan a letter from the late Godwin confirming she has arrived from the future.

The letter insists she read Gwynedd’s diary — which Rhys owns — before the Winter Solstice. “I am not understating facts when I say the fate of the world is in your hands,” Godwin writes.

Rhys translates the Old English text while Magellan reads. The diary tells of twin comets appearing in 540 AD, the birth of Gwynedd and Merlin, and their mother’s death in childbirth.

Guided by the High Druid Cathan, Gwynedd inherited an Orichalcum ring forged from the lost gold of Atlantis — a ring that sings and acts as a map. She records how an ancient guardian, Isis, once saved Earth with a song that controls atomic spin.

That symphony was split into six parts: four hidden with women across history, one kept by Gwynedd, and the final piece entrusted to her son Horus.

Reading this, Magellan realizes her music teacher Garesh — who gave her an identical Orichalcum ring — is the Sumerian immortal from the diary’s pages.

Danger closes in at Hereford Manor. Lord Erickson, a baron among the guests, hires a criminal posing as Magellan’s father to seize the diary and abduct her.

Bound in a carriage, Magellan fights back, kicks the impostor in the face, and escapes into the night. Wounded and bleeding, she follows fiddle music to The Hen House tavern in Leicester, where the owner Mary nurses her back to health.

She joins Mary’s triplet folk band, The Lucky Horseshoes, and travels to London to find the composer Fanny Mendelssohn, who is attending her brother Felix’s conducting debut.

Rhys, realizing his error in trusting the impostor, hires Bow Street Runners and reaches the Argyll Rooms just as Magellan collapses from fever and exhaustion.

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Playing piano side by side, Fanny passes Magellan the symphony’s first movement. Shadowy entities immediately begin hunting them. At All Hallows by the Tower church, Magellan plays the pipe organ while Rhys holds on to her, and both are dragged into the Ley Line.

The leap lands them in Frankfurt in 1165, where they find the abbess and composer Hildegard of Bingen. Magellan plays the vielle beside her and receives the second movement.

A street thief stabs Rhys in the chest and steals the satchel holding the diary. As demonic shadows surround the church, Magellan plays a portal open to save his life.

They surface in Florence in 1570. Leaving the gravely wounded Rhys with a priest named Father Giuseppe, Magellan earns her way into a Medici palace conservatory and duels on the lute with Maddalena Casulana, the first woman in history to publish her music.

Maddalena shares the third movement. Chased by sonic attacks, Magellan reaches Rhys in time and opens the Ley Line with the song.

The portal drops them at Hereford Manor in 1799, thirty years before Rhys’s era. There they meet a younger Godwin Sherwood, who cleans the infection from Rhys’s wound and saves his life.

Godwin has recovered the stolen diary from an international collector and finished the translation.

During this stay, Rhys and Magellan understand that their souls are entwined across lifetimes, and they marry in the center of the labyrinth. Godwin paints Magellan’s portrait — red roses, pink gown — the very canvas Rhys will find in his closet decades later.

The fourth movement belongs to Maria Anna “Nannerl” Mozart, Wolfgang’s sister.

In The Last Labyrinth, this final leg sends Godwin, Rhys, and Magellan by carriage across war-torn Europe to Saint Gilgen, Austria, arriving on December 21 — the eve of the Winter Solstice.

In Nannerl’s home, Magellan plays the oboe beside her harpsichord and receives the last movement. The moment the final note sounds, the labyrinth of time splinters apart, shaking loose apocalyptic tremors and shadow entities across the glacial lake.

Godwin shoves Rhys and Magellan onto the lake in a rowboat. Surrounded by a vortex of dark sound, Magellan stands and plays the complete four-movement symphony on her oboe.

She and Rhys share a transcendent vision of their future, performing the symphony onstage before the world. The Ley Lines then release her back to her original twenty-first-century timeline.