Missing persons investigations are simply the best way to find out the truth about anyone you cannot find.On average, more than 800,000 people are reported as missing and are entered into FBI's National Crime Information Center (NCIC) annually. Of these, 85%-90% are minors. These statistics do not include those who are unofficially missing such as those who have not been reported as missing persons.
One of the big problems with police-led missing persons searches is simply that the term missing persons is so narrow. Police will only begin looking for a missing child at a specific amount of time after the child was last seen and by that time, it may be too late if the child has been kidnapped by a pedophile or child killer. Police are also reluctant, due to thinning resources, to search for people who voluntarily left home or for those who live on the streets. Even in a police-led missing person search, police will stop looking after a certain amount of time and will declare the case a cold case.