Start with a specific question
Explain what needs to be verified and why the enquiry has a legitimate purpose. Different questions call for different methods: public-record research, tracing, observation or evidence organisation. Agree safe communication, geography, relevant dates and any legal instructions before selecting a service. The outcome may be a verified fact, an excluded lead or an unresolved question.
Costs and expectations
Fees depend on the agreed methods, personnel, travel, observation periods and reporting. Ask what the written estimate includes and when further approval would be needed. Collection cannot guarantee a location, an observed activity or a court outcome. Immediate danger and urgent missing-person concerns should go to police.