If you believe that someone has been arrested and convicted for a sexual crime but has not registered as a sex offender, the best way to try and ascertain such is to go down to the county court house where you believe this person was arrested, convicted and look through the computer registry to see if that person's name pops up.If it does, then your recourse is to pull all criminal files concerning this person and see if there was a conviction pertaining to a sex crime. The same holds true concerning any restraining order.