Edward L. Du Bois, Jr. (1911-1968) founded Investigators, Inc. in 1955. Mr. Du Bois (pronounced DuBoys) was born in New York City in 1911 where he attended public grade school until his father retired from the NYC Police Department and moved the family to Miami Beach. He completed grade school, and graduated from Miami Beach High School in 1930, where he was President of the student body, Captain of the football team, and Editor of the yearbook. Without taking an undergraduate degree, Du Bois then attended the University of Florida School of Law, and received his LL.B in 1937. At law school, he was a member of Phi Alpha Delta legal scholastic fraternity, served as Captain in the ROTC and was President of four groups: Chi Phi Fraternity, the University Glee Club, the YMCA, and the Florida Players. He also served as student minister for Congregational churches in Florida and Georgia from 1931-1934.

From 1937 to 1939, Du Bois, Jr. was an Associate Attorney with Shutts & Bowen in Miami. He was also a Municipal Judge in Surfside, Florida from 1938-1939. Du Bois joined the FBI on February 6, 1939, and began a fifteen-year career in cities all over the country. He was a counselor for the forty-ninth session of the FBI National Academy, attended FBI Police Instructors School, Traffic School, and Inspectors School. Finally, he conducted police and traffic schools throughout Florida for two years until February 6, 1954, when he resigned from the FBI.

Du Bois, Jr. then practiced law with George Bolles, former FBI agent and partner, and Edward F. Boardman, a law school roommate. In June of 1954, Du Bois, Jr. formed a partnership named Special Agent Investigations with A. Kenneth Altschul, William Stanton and George Wackenhut. This partnership lasted through 1955, at which time Du Bois, Jr. started Investigators, Inc. and broke off on his own. Du Bois, Jr. used his experience as an Attorney, FBI Agent and Judge to form the foundation of high professional standards that still characterize this firm today.