At all times, religion has played a huge role in human life. It explained the meaning of his existence, helped get rid of fear, gave hope, promised freedom and happiness, allowed the believer not to feel alone. Along with the mainstream churches, alternative organizations, currents and movements appeared from time to time (and are still appearing in modern society) - otherwise speaking, sects. The word "sect" means school, teaching, direction. This book is a short guide to the world's sects and pseudo-religious organizations.