What is expected of you in being a private investigator?

they help solve a mystery or a case and then look for clues

Answer:

Television and movies would lead you to think that private investigators fight crime by solving cases "too tough for ordinary cops" or wind up getting involved in cases of intrigue with spies, conspiracies or beautiful women. In real life they snoop through peoples garbage to see if they are drinking, follow wayward spouses to their girl/boy friends' houses for future divorce actions, watch health insurance claimants to prove or disprove their cases, find debtors so legal action can be initiated or their cars repossessed. follow children for parents who want to know if they are using drugs or seeing the wrong people.