The books are all about secrets, people anonymously send in their secrets a regret, fear, confession, childhood humiliation anything.
The author of these books first began by leaving postcards in random places asking them to write down a secret and mail it back to him anonymously. All apart of an art project he was putting together. A lot of postcards came in and he began posting them to a website the website was viewed by millions of people and he now has published 4 different books of all these different secrets.
I have read the books over and over again they are very interesting, scary, shocking, I have kept these post card secrets pretty low key. Check the books out for some real secrets!