About

Group One Investigations are experts in surveillance, locating missing persons, intellectual property investigation and more. We offer surveillance, activity reports, undercover operations, investigating extra-marital infidelity, assisting in the safety of your teenagers, polygraph testing, email tracing and internet based investigations, uncovering issues, employee theft and background checks, and other critical operations. Our agency focuses on results, meaning that our clients’ satisfaction is the foundation upon which we ensure we are the best private investigator agency in Melbourne. We a