Combining personal reminiscences; published articles, and internal documents, Betrayal of the Spirit details the scandals that beset the Krishnas -- drug dealing, weapons stockpiling, deceptive fundraising, child abuse, and murder within ISKCON -- and the schisms that forced 95 percent of the group's original members to leave. Amid this institutional disarray, Muster continued her personal search for truth and religious meaning as an ISKCON member until, disillusioned at last, she quit her job and left the organization.

In a new preface to the paperback edition, Muster discusses the personal circumstances that led her to ISKCON and kept her there as the movement's image worsened. She also talks about "the darkest secret" -- child abuse in the ISKCON parochial schools -- that was covered up by the public relations office where she worked.