How do you need to present your case to a PI

There is much common myth associated with the work of a private investigator, and people never seem to have a complete understanding of the work of a private investigator. There are many series like Sherlock Holmes, which give us a clue regarding the subject and make things pretty clear for a common man, but still, there could be many misconceptions and false assumptions. So, how exactly does a private investigator work? What is it to…