Private Investigator Derrick Marshall shows you how to utilize cheap and effective devices to conduct covert surveillance of your home, office, or any other area that you need to keep tabs on. The tools used in these videos are utilized by Derrick in his work as a private investigator.
Derrick Marshall has over 27 years of experience in the Private Investigation industry. After attending Missouri State University, he founded Black Diamond Detective Agency. This agency which would eventually expand operation into 9 states. In 2010 he would branch out to form Marshall and Associates LLC, a private detective agency that would grow to employee investigators and investigative contacts across the globe.
Marshall and Associates is a full scale Private Investigation firm with offices in Springfield, MO and Orlando, FL.
Need to talk to a Private Investigator?
Orlando, Florida Office
Phone: (407) 403-8786
Springfield, Missouri Office
Phone: (417) 863-7117
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