This book comprises the biographies of the twelve Shi’a Imams (a) in brief in order to acquaint the readers with certain aspects of their personality as well as the ethical virtues they exercised during their lifetime. The contents of the book include short biographies of Imam Ali, Imam Hasan, Imam Hosein, Imam Sajjād, Imam Sādeq, Imam Musā Kāzem, Imam Rezā, Imam Hasan Askari, and the Imam of the Age, the awaited Mahdi (a). The book begins with a brief discussion on the concept of “Taqiyyah”.