The first book ever to combine the socio-historical-cultural study of the three Jewish communities of India, viz., the Bene Israel, the Cochini and the Baghdadi, the three judaizing movements that emerged in India during the last seventy years, viz., the B'nei Menashe of Manipur and Mizoram, the B'nei Ephraim of Andhra Pradesh and the Chettiars of Tamil Nadu, and the traditions of Israelite descent among certain sections of Muslims and Christians in South Asia and the Jewish response to those traditions.

The book is an updated and revised version of the author's doctoral thesis.