About The Book

Blending medieval history with deadly secrets and sacred bloodlines, The Undying Lamb is a propulsive historical thriller in the vein of Robyn Young's Brethren, where the truth behind a child’s legacy could shatter kingdoms—and the Church itself.

In the Shadow of Empires, One Child Holds the Key to a Forgotten Legacy…

Year of Our Lord, 1230. Europe is ablaze. Kingdoms clash, faiths fracture, and the echoes of the Crusades still thunder through the land. Amidst the chaos, a child is brought to Rome under the veil of secrecy—rumored to be the last living descendant of Godfrey de Bouillon, the First Crusader King of Jerusalem, and, some whisper, of Christ himself.

But the Holy See refuses sanctuary.

Robin, a disillusioned English crusader, and Sibilia, a fierce Cathar spy haunted by the horrors of the Albigensian Crusade, are unlikely allies. Forced to safeguard the Grail Child, they find themselves hunted across a war-torn land. Their path leads to Béziers, a city still stained with the blood of a massacre, where the Inquisition’s grip tightens and a young noblewoman’s life hangs in the balance.

As swords clash and faith is tested, Robin and Sibilia must confront not only the enemies who pursue them—but the secrets they keep from each other.

A sweeping tale of faith, betrayal, and love, The Undying Lamb is a spellbinding Robin Hood adaptation that delves into a forgotten corner of history where the line between legend and truth blurs.

About The Author

Born in Zimbabwe to Dutch and English parents, Paul grew up exploring Africa and later studied English Literature at Rhodes University. After teaching primary school, his passion for storytelling led him to travel Europe, earn a PhD, and uncover his family roots in southern France’s Languedoc region. Now based in Rotterdam, he writes, researches, and advises governments on data management.

Product Details

  • Publisher: Rising Action (October 6, 2026)
  • Length: 384 pages
  • ISBN13: 9781998672400

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Raves and Reviews

"The Undying Lamb is everything I love about historical fiction: immersive, ambitious, emotionally resonant, and completely absorbing. In this richly imagined tale, Paul Brous weaves together history, legend, faith, and adventure to create a story that feels both timeless and current.

Set against the turbulent backdrop of thirteenth-century Europe, the novel transports readers into a world shaped by the lingering scars of the Crusades, religious persecution, political intrigue, and social divisions. Yet amid the chaos and conflict, Brous never loses sight of what matters most: the people at the heart of the story. Robin and Sibilia are compelling, layered protagonists whose uneasy alliance, growing trust, and subtle romantic tension lend emotional depth to a journey already fraught with danger.

The novel's exploration of justice, inequality, discrimination, and belonging both captivated and resonated with me. Through a cast of outsiders, rebels, and unlikely allies, Brous examines the human cost of prejudice while celebrating the courage of those who challenge it. Echoes of the Robin Hood tradition run throughout, but this is a story entirely its own—fresh, thoughtful, engaging, with just enough humour to cut through heavier themes.

Richly researched, beautifully crafted, and impossible to put down, The Undying Lamb is a remarkable debut that will delight readers who love historical fiction filled with adventure, heart, and hope." 

– Marthese Fenech, author of the Siege of Malta Trilogy (Eight Pointed Cross, Falcon's Shadow

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