Spartan Investigation Service

Spartan Investigation Service (SIS) is a full-service Private Investigation firm based in Boston, Massachusetts with associates throughout New England, New York, and Florida. SIS is owned and operated by Brian DeJoy, a decorated former DEA Supervisory Special Agent and a former police officer with over 20 years of investigation and security experience. SIS licensed professionals provide a wide range of services to clients across the nation. Review our site to learn more about our comprehensive services and offerings, or for additional information. With a licensed team of former federal agents and police detectives, we can assure you that whatever your particular case may be, it will be completed in a private and confidential manner.

At Spartan Investigation Service, no investigation or security matter is too complicated for our accomplished staff to handle. We work with a large range of investigation and security clients. Each client is offered a free and confidential initial consultation meeting. Once you decide to work with our Private Investigation Firm, we build a team for your case according to its nature and specific requirements. You can trust our professionals to ethically and professionally gather whatever information is required to help you make informed decisions. In every case, we’ll help our clients to the best of our ability, or guide them in the right direction towards the right investigative or security solution they need.