"H. P. Blavatsky; A Great Betrayal" by Alice Leighton Cleather is a critical examination of the Theosophical Society and its leadership, written in the early 20th century. The book focuses particularly on the actions and influence of Annie Besant, Blavatsky's successor, and how they diverge from the original teachings of Blavatsky, especially concerning issues of morality and sexual conduct. Cleather aims to defend Blavatsky's legacy against what she perceives as a betrayal by those who have taken her mantle, highlighting the moral decline within the Society. The opening portion of the work sets the stage for Cleather's argument, revealing the disturbing circumstances surrounding the Theosophical Society post-Blavatsky's death. It recounts the transition of leadership to Besant and her subsequent support of C. W. Leadbeater, a controversial figure accused of immoral practices. Cleather expresses her deep concern over Besant's leadership and the increasing moral degradation within the Society, asserting that true Theosophy has been corrupted by those who prioritize personal power and influence over adherence to the ethical principles that Blavatsky championed. This foreword serves as both a protest and a call to action for those who remain loyal to the original mission of Theosophy. (This is an automatically generated summary.)