Inter-State Investigative Services is a private investigation firm based in Arizona with offices in Phoenix and Tucson. We provide a full range of services in a variety of different fields, including criminal and civil defense, domestic investigations, pre-employment background screenings, insurance investigations, and more. We have been in business for over 25 years and have an A+ rating from the BBB. We are licensed and insured. Our team of investigators is comprised of individuals from different professional and educational backgrounds. We employ both male and female investigators and have Spanish-speaking investigators.