A highly illuminating book; it dispells misgivings with regard to Imamate whose fountain head is Ali-Al-Murtada (RA). This heritage passed down to twelve Imams (Spiritual Leaders). The last one is Imam Mahdi (AS) in contrast to Ali-Murtada (RA) the opener of this heritage. The factual position has been elaborated in the light of authentic Ahadith. A unique treatise on the topic as to the advert of the last Imam.