The main plot of the story wasn't too bad. The part that was confusing was the age of the character.  Although the main characters were over the age of 60 a lot of times I found them acting like people my age (37) or younger.  Also, I am somewhat tech-savy, but was a little put off by references to outdated gadgets.  I actually had to Google what a Palm Treo was.  This book is probably best for people over 60.  I also found it to be a very hard hard.  It seemed to take me forever to get through it.