The Poitiers Affair book cover
Crime Novel

Viviane Janouin-Benanti

The Poitiers Affair

A Harrowing True Crime Story

A powerful true crime book about secrecy, silence, and survival

What if the most monstrous prison in history… was inside a respectable family home?

Poitiers, France. 1901.

Police burst into an aristocratic town house after receiving an anonymous tip. What they find behind a bolted attic door shocks the world: a skeletal woman, lying in filth, locked away for 25 years. Her name? Blanche Monnier - once beautiful, educated, and full of life. Now nearly dead, after a quarter-century of total darkness, silence, and unimaginable cruelty.

Who did this to her?

Her own mother and brother.

Based on the true story that stunned France at the turn of the century, The Poitiers Affair is a bone-chilling account of how social image, rigid politics, and blind obedience to family honor led to one of the most horrifying acts of domestic captivity ever uncovered.

Author Viviane Janouin-Benanti doesn’t embellish - she doesn’t need to. Using real police reports, letters, and court records, she unravels how a vibrant young woman was erased from society, hidden behind locked doors, all because she dared to love the wrong man.

This is not fiction.

This is not exaggeration.

This happened.

And what’s most terrifying?

Everyone around her looked the other way.

If you thought you knew what a true crime story could be, think again. The Poitiers Affair is a gripping descent into the polite face of evil - where the prison bars are made of silence, reputation, and twisted love.

Read it.

You won’t forget it.

Because once you meet Blanche Monnier, you’ll never stop hearing her story.

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Some photos from the book

La Séquestrée de Poitiers
Blanche Monnier, the captive, the photo was taken in the hospital just after Blanche was rescued
Maison de la Séquestrée
The house where Blanche Monnier was held captive
Palais de justice de Poitiers
The Palais de Justice in Poitiers
Poitiers
Poitiers on a map of France
Président du tribunal
The presiding judge
Frere de la Sequestree
Blanche's brother at the bar

Book Reviews

A captivating book from cover to cover, and what’s best is that the whole story is told in its historical, social, religious, and political context.

An absolutely captivating investigative piece…

Le Courrier de l'Ouest

A poignant story from Viviane Janouin-Benanti

Vendée Matin

If there is one thread that connects all of Viviane Janouin-Benanti’s works, it’s that she chooses to side with the victims…

L'Écho de la presqu'île

Viviane Janouin-Benanti’s novels revive an old French tradition: retelling the stories of criminal cases.

Delphine Cingal

This sad story, narrated like a novel, reveals the divisions that plagued provincial society

Paul Maugendre

A brilliantly conducted investigation, well documented and easy to read.

Historia

The Poitiers Affair is not just a shocking true crime story, it is a meticulously researched indictment of family cruelty, societal complicity, and institutional apathy. Viviane Janouin-Benanti brings Blanche Monnier’s story to light not with dramatic flair, but with compassion, discipline, and a determination to honor the truth.
This is a must-read for those interested in women’s history, criminal justice, and the psychology of power. It is a disturbing yet necessary reminder that the worst crimes often happen in silence, and that telling the truth, even a century later, is an act of justice, raveled not by violence, but by the cold machinery of power.

The marina books lovers

The author’s lively style takes this horrifying true story to a new level.

Lire en Vendée

This book is also about a man and a woman and all that kept them apart. One was Protestant, the other Catholic; one a liberal Républicain, the other from a conservative Royalist family; one with family ties to nobility, the other dedicated to helping the working man; one older and wiser, the other young and carefree. Everything was against them.

During the 19th century, France was struggling to stabilize its government, pitting those yearning for a true republic against those wanting a return to the monarchy. This young couple was caught in the eye of the storm, falling in love in spite of it all and suffering the consequences.

The True Crime French Touch, the 3E Editions blog

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