This is a brilliant study of the personal histories of a handful of accomplished, interesting, insightful victims of a charismatic (unlicensed) psychotherapist. The Sullivanian Institute evolved from a radical experimental school of therapy to a residential community where therapists, trainees, and patients lived in a what initially seemed like harmonious polyamory, until the increasingly manipulative and coercive leadership transformed the group. Stille traces a detailed and compassionate evolution of the Institute from a place of radical antibourgeois values that attracted a community of smart, interesting, talented people, to a cult rooted in abusive practices (child separation, sexual abuse, bullying, gaslighting, extortion, etc.) I learned a lot from the book — not just about the Sullivinian Institute, but about how charismatic leaders gain and maintain power, and how even compassionate, intelligent people become entrenched in coercive communities and even become perpetrators. Stille interviews dozens of former Sullivanians across decades and generations. The Sullivanians and the children raised collectively in the residences have insightful and balanced things to say about their involvement. Stille narrates a dense, tangled network of sexual, therapeutic, residential, and biological relationships to tell poignant personal histories of his interviewees.