Book Review: I Ate His Heart: Interviews with a Cannibal by Nathalie von Zelowitz

 

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I Ate His Heart, by French prison psychologist Nathalie von Zelowitz, is a remarkable work of clinical and philosophical nonfiction: disturbing in subject matter, yet unusually thoughtful, humane, and intellectually disciplined in execution. Built around von Zelowitz’s decade-long series of interviews with an incarcerated killer known by the pseudonym Bernard, the book examines one of the darkest imaginable crimes without ever reducing it to spectacle. Instead, von Zelowitz offers a rare, rigorous study of how a mind can arrive at an act that seems almost impossible to comprehend.

The book’s power lies in its refusal to sensationalize. Bernard was found at a gruesome crime scene repeating the phrase “I ate his heart,” yet unlike many perpetrators of extreme violence, he was judged mentally sound, legally sane, and responsible for his actions. That fact gives the book its unsettling force. Von Zelowitz is not writing about madness in any ordinary sense; she is investigating the coherent, if profoundly distorted, internal logic that allowed Bernard to cross the most extreme social and moral boundary.

Von Zelowitz’s greatest achievement is the balance she maintains throughout. She approaches Bernard through psychoanalytic theory, but she does so with clarity rather than jargon. Her interest is not in excusing him, romanticizing him, or turning him into a monster for entertainment. She wants to understand the psychological truth at the core of “passing to the act”: the point at which fantasy, trauma, isolation, desire, and identity collapse into irreversible violence. The result is a study that is both clinically precise and philosophically searching.

What makes the book especially compelling is von Zelowitz’s ethical restraint. She gives Bernard’s words space, but she does not surrender the narrative to him. She listens closely enough to reveal the structure of his thinking, while still preserving the moral gravity of what he did. Just as importantly, she remains respectful of the murdered man, never allowing the victim to disappear behind the psychological fascination of the perpetrator. That sensitivity gives the book a seriousness that many works in the true-crime genre lack.

The prose is controlled, elegant, and deeply unsettling in the best sense: it forces the reader to think rather than merely react. Von Zelowitz shows that Bernard’s crime did not emerge from chaos alone, but from a deeply calculated and coherent inner world shaped by childhood trauma, extreme isolation, and a distorted understanding of human connection. Her analysis makes the book valuable not only for readers interested in criminal psychology, but also for anyone drawn to questions of responsibility, identity, violence, and the limits of empathy.

Overall, I Ate His Heart is an extraordinary and courageous book. It is chilling, cerebral, and morally serious, but also deeply humane in its insistence that understanding is not the same as forgiveness. Von Zelowitz succeeds brilliantly in connecting psychological theory to Bernard’s disorder while maintaining compassion, professionalism, and respect for the victim. For readers with any interest in the psychology of deviance, forensic psychology, psychoanalysis, or the darker edges of human behavior, this book is not merely recommended; it is essential reading.