The Postmistress - Sarah Blake

The reason that I picked this book up to read was that it reminded me of the Guernsey book.  Not sure why but it just had that feel when I read the cover.  It didn't turn out to be what I had expected but that isn't a bad thing either.  I really did like the book. 

In 1940 Iris is the postmistress in a small town in Massachusetts where she thinks that it is her responsibility to pass along secrets through mail.  She takes her position very seriously and never does anything that could cause anyone to question her until one day.... she opens a letter, reads it and doesn't deliver it.