Being a private investigator is not that easy. So given a prospective in looking for a private investigator that will suits your criteria and expectations then do some research and ask more about them (the private investigator) from friend or from a family member or in lawsuit place, where many of attorney's knows about some high reputation and highly respected as a private investigator. You list all of the names and contact them and have an appointment each of them at a time.
Though if you are looking a private investigator to work with you, there are things you also need to consider. First step you are going to do is to ask from a friend who was with the same situation with yours so that you can actually have an idea of a certain private investigator. You also can ask from a friend who is in the lawsuits field. He or she can give you names and suggestion to whom is the best one to pick up.
After having the names of the possible private investigator you are looking for, you contact them and have an appointment with them one at a time. Let them bring along with them the credentials you needed or you wanted to see so that it will also be the basis of your decision. Aside from your hearsay about that certain private investigator, you also have to see for yourself if is it true or not. It is not like you do not trust your sources but it is better to be prepared and better to be sure at all times. The things you are going to tell with the private investigator so you will do anything just so you can choose the best private investigator to work for you.
One of the credentials you will look for is the license of being a private investigator. It is a proof that he or she is capable of doing his or her job very well. Also ask from them the documentations of the past and recent cases he or she handled well. Just see to it that you are satisfied and bear with them that you are still looking other possible time to meet other private investigator. So that they would not think that it is a waste of time to see you and yet no concrete job description. You should explain to them the confidentiality of the case you want them to do or investigate. Not at all times the person will understand what you are trying to explain so better yet let them know their status first.
When you already chose one then, let him or her do your favor as you pay the charges that both of you agreed. The most important thing is he or she can offer and render to you the best out of the best services. And can resolve the case as soon as possible.