Welcome to Qualls Security & Investigations Agency. Our professional staff is on board ready to serve you. Whether it be background investigations or providing your company with the security equipment and personnel.

Our licensed agency can also setup surveillance, prepare an investigative summary, and appear in court as an expert witness to help win your case.

QSI has built a reputation for it's quick, prompt, professional service. Our agency proudly serves the entire state of Maryland.

Call today for your free consulation.