Who is the best private investigator west hollywood ca who can render reliable investigative services for you? You need to collect names before you select. When trying to interview potential private investigation candidates, ask the investigator for some examples of clients they have worked for in the past. That should serve as a proof of their reliability. Before deciding, you need to know if the P.I that you are about to hire has handled a case like your case before. Ask for his track record. If he is reliable, he will be providing you that. Ask the investigator his/hers experience with your type of case. That is your right so exercise it.