Diamond Investigations provides professional surveillance services throughout greater Boston and all of Massachusetts, combining advanced technology with over three decades of investigative and law enforcement experience. Our licensed private investigators specialize in traditional, video, and technical surveillance to document activities accurately and discreetly.

Whether the goal is to confirm suspicions, gather evidence for court, or protect your business, we deliver results you can trust. Our team uses proven surveillance techniques—including fixed surveillance (stakeouts), stationary technical setups, and undercover operations—to observe and record the truth without detection.

From domestic matters to corporate investigations, every case is handled with professionalism, confidentiality, and a focus on results. When it comes to uncovering facts that matter, Diamond Investigations stands above the rest for reliability, accuracy, and legal admissibility. Put our expertise to work—contact Diamond Investigations for professional surveillance today.