In this long and thoroughly researched book on the history and growth of the Jehovah's Witnesses, the author of four previous books on religion in the United States makes a worthwhile contribution to understanding this fast-growing sect. Long considered a crackpot movement, Jehovah's Witnesses at present number in the millions, distribute 125 million copies of books, periodicals and tracts every year. The religious intensity of a group whose every member considers himself an ordained minister has considerable appeal in an age of uncertainty and skepticism. Each member has the personal obligation to save as many people as possible from the rapidly approaching of the world, so that these people may share Jesus' spiritual life afterwards, or at least live forever in peace on a new paradise on earth. Founded in by twenty five year old Pastor Russell, the movement is a sidegrowth of the and Day Adventists. Pastor Russell and his successor as head of the , judge Rutherford, are treated in this book more in the light of colorful characters than religious moral leaders. Author Whelan's attempts to be entirely lead him into occasional stuffiness and carefully stated, painfully documented detail. He has, however, brought together all the relevant material and arranged it comprehensively. A workmanlike book which offers the facts to the interested reader and leaves the interpretation up to him.