There has been a great deal of philosophical progress in the free will debate in the last two generations, and much of this progress has been complex and rather technical. In less than one hundred pages, John Lemos manages to introduce the reader to this debate, as well as to related debates about religion and science as they relate to free will--without dumbing down and in a pleasant, accessible dialogue form. This is an impressive achievement. --Saul Smilansky, Professor of Philosophy, University of Haifa.