"Natural Theology: Five Views" is exactly what the title says - five different views of natural theology. The five contributors disagree even over the definition of natural theology and what natural theology encompasses, but a very rough description seems to be, "What, if anything, can we know about God from the natural world and the use of human reason?" (That is to say, without special revelation.) This book looks at the question from five Christian perspectives, but this is also a question that is (apparently) discussed within other religious traditions as well.
I found the book both challenging and edifying. I found the views advanced by Charles Taliaferro (a contemporary view), Fr. Andrew Pinsent (a Catholic view) and Alistair McGrath (a classical view) most compelling, but Paul Moser's "deflationary view" and John MacDowell's "Barthian view" also provided food for thought and helped identify weaknesses in arguments. One of the great strengths of this book is that each author has a chapter to explain his own view, and then the other four authors respond to it.
This book is accessible to the layperson, but it is helpful to have at least a slight familiarity with theology or philosophy. As a person with only slight familiarity with both, I was able to follow the arguments pretty well (with some googling to understand philosophical terms), but I would have been lost if I had come to it cold. I plan to re-read the book at a later date and continue thinking about these issues.