The concept of the Mahdi is one of the most controversial and misunderstood topics of Islam, and different sects have proposed radically variant beliefs about him. Most Muslims know little, if anything, about this enigmatic figure. In this lecture the speaker sheds light on the Prophetic descriptions of the Mahdi. Basing his talk entirely upon authentic hadeeths and the explanations of reputable scholars in Islam, he explains in great detail the signs of the Mahdi, the trials and tribulations that shall accompany him, and the intense events that shall take place in his reign, including the descent of Is’a Ibn Maryam.