Bayes's theorem is a tool for assessing how probable the available evidence makes a particular hypothesis. The papers in this volume consider the worth and applicability of the theorem, ending with the original 1763 paper containing the theorem.
It has been a very interesting book, or collection of papers. I found it to be more about thought provoking than informative. The book starts with an introduction to probability. Then, it examines the scope and limitations of Bayes's Theorem, which is something I haven't seen in three probability courses I have taken so far! Then it discuses two very interesting applications of the Theorem, the first is about weighing the evidence by juries with the theorem (My favourite and most interesting chapter) and the second is responding to Hume's proof against miracles. (I don't have a solid background about the proof, so I cannot judge)
After forming my opinion about the book, I went and read about the authors, and discovered that they are partially Philosophers and that probably explains everything :).