Father Elias is a brilliant, skeptical priest armed with a post-structuralist education and a firm belief in psychology. He sets out to interview the Church's most celebrated exorcist, Father Thomas Coyle, intending to "deconstruct the legend" and expose the rite as a form of "social engineering". He believes the demon is merely a "psychological scapegoat" or a "metaphor for the human mind".
But the interview, recorded on an old reel-to-reel machine, quickly becomes a "document of collision". Father Coyle, a "weary warrior" hollowed out by his experiences, recounts his most disturbing cases-irreducible phenomena from Manila, the American South, and London that defy all logical categorization. He describes his enemy not as trauma, but as a "customized, surgical intelligence" with "malice".
As Coyle unburdens his "painful, exhausting knowledge", the interview frame shatters. Elias's academic certainty crashes against the "raw, terrifying fact of the monster", leading to a complete philosophical collapse cite_start]and a final, horrifying confrontation where the skeptic must face the evil he dismissed as myth cite: 719-721].