This is the fourth in a four-volume series surveying the writings of Baha'u'llah. Volume 4 covers the most momentous period in the ministry of Baha'u'llah, the final years of His life when after the long period of exile and imprisonment He took up residence in the delightful Mansion of Bahji. Here He revealed Tablets of unsurpassed importance, including His last major work Epistle to the Son of the Wolf. Many of the allusions in these Tablets to persons and events are explained in this book.