Did you know Facebook has a hidden folder.   People who are not friends with you on Facebook can send you messages and they end up in this hidden folder.

Be Social, Get Success posted a detailed set of step-by-step instructions on how you can find your secret messages on an iPhone.

Read:  Did You Know You Have A Facebook Hidden Folder?

If you are an Android user, I found a set of instructions on CNET.

Take a minute to check out your Facebook hidden messages.  They could be from a new client trying to reach you.