Hello and welcome,
-What version of OS X?
-Do you have a current Time Machine or other backup?
-Which $20 app will do what you are looking to do?
There may be a few AppleScripts/Automator Applications around the Internet that will do that, I just want to make sure you have a backup of the files before providing a couple of links. I would hate for you to lose any of your photos/data.
C