The TV series, CSI have been a source of admiration to those who have become ardent fans of the way they walk up to a crowd scene shrouded in mystery and with what would seem like the sniffing power of a dog unwrapping the mystery to reveal the brain behind it. Like they will say, there is never a perfect crime. You could be the one doing the job rather than sitting to watch others catch the fun. All you need is to take criminology courses online and learn the secrets behind crimes.