"Holy Trio and Their Mission" by Swami Bhajanananda provides a comprehensive introduction to the origins, ideals, and expansion of the Ramakrishna Movement.

The book highlights the lives and teachings of the "Holy Trio"—Sri Ramakrishna, the spiritual master who demonstrated the unity of all religions; Sri Sarada Devi, the Holy Mother who embodied divine motherhood and universal love; and Swami Vivekananda, the foremost disciple who spread their message globally and established the Ramakrishna Math and Mission.

Additionally, the work covers the direct monastic, lay, and women disciples. It outlines the movement’s foundational philosophy, emblem, and core mission: Atmano Mokshartham Jagat Hitaya Cha—striving for personal spiritual liberation while serving humanity as a manifestation of the Divine.