If St Thomas reached Kodungallur in Kerala only in 52 AD, as the Malabar tradition about the Apostle's mission holds it, where was he preaching the message of the gospel in the years preceding it. Can the tradition about the North Indian mission of St Thomas have any historical value. This book tries to give a comprehensive answer to these questions. It also brings to our notice that the Christians of Pakistan and India can have the same apsotolic patrimony of St Thomas. As a new and bold attempt in the multitude of studies about the Indian mission of the Apostle Thomas, the present book can inspire and guide students of history for further studies and research. The author was born in Kerala and is priest belonging to the Missionary Society of St Thomas the Apostle. He holds a licentiate in Sacred Theology from the Catholic Institute of Paris. He obtained a doctorate in Church history from the Pontifical Gregorian University, Rome.