Introduction -- Skills needed to become a successful investigator -- Foundations of investigation -- Interviews, interrogation, and taking statements -- Legal investigations -- Fraud investigation -- Computer crime -- Criminal investigation -- Insurance and arson investigation -- Domestic investigations -- Due diligence and background investigations -- Locates and skip tracing -- Surveillance -- Service of process -- Testifying in court -- Ethics -- Finding a niche -- Operating a professional investigative agency -- Professional associations -- Getting licensed

1. Private investigators -- United States -- Handbooks
2. manuals
3. etc
4. Electronic books.