"The Voice of the Devil" by G. Campbell Morgan is a vintage hardcover novel published by Fleming H Revell Company in 1978. This first edition book is part of the Morgan Library series and delves into the topics of demonology and Satanism, making it a valuable addition to any collection focusing on religion and the occult. With a weight of 0.2 pounds and 63 pages, this fascinating read offers a unique perspective on the supernatural and the demonic, making it a must-have for those interested in the darker aspects of religious studies.