Licensed PIs are often hired to do fact-finding in child custody cases. Each case is different but generally, a private investigator will collect evidence that’s relative to the case, perform surveillance and tracking measures, and conduct background checks. The work often includes monitoring the individual to see where they go, who they spend their time with, and how they interact with the children. Investigators can also look for criminal activity, any dangerous habits like drug abuse or gambling, and any signs that can indicate that the children are living in an unsafe environment.