A private detective can also be hired to help track a missing person. The process of tracking a missing person by a private detective may involve:

1. Initial investigation: The detective will start by gathering information about the missing person, including their personal details, habits, and potential places they might have gone to.

2. Interviews: The detective will conduct interviews with friends, family members, co-workers, and anyone who had recent contact with the missing person.

3. Surveillance: The detective may also use surveillance techniques to monitor the missing person's known associates and locations.

4. Technology: The detective may use various technology tools such as GPS tracking, cell phone pinging, and social media analysis to gather information about the missing person's movements and potential whereabouts.

5. Background check: The detective may also conduct a background check on the missing person to gather additional information about their past and any criminal activity they may have been involved in.