As I had read the first two books in the series, I felt I was required to read the third (and last book). 
 I did not like this book as much as the first...but I enjoyed it more than the second. This book was A LOT like the tv show...so you will find you already know the outcome of most of the chapters...but with more background. I did find I had to force myself to read this book at some parts as the stories were a bit hard to read...and led to moping. Here is the story of the nuns housekeeper (why does she live with her brother), the twins who refuse to separate, the girl who lived on her father's boat and earned her keep as a "prostitute"....) 
 Read this book ONLY if you read the first two...