Elizabeth Bourne


Elizabeth founded Know It All Intelligence Group with two goals in mind: to help others find the truth and to provide outstanding client service. Over the years, she has assisted with numerous complex high-level investigations including a bribery/forgery investigation that resulted in a grand jury indictment and conviction of a Bucks County area municipal school district employee. Elizabeth has garnered many accolades for her charitable work across the United States. Shortly after September 11, 2001, while battling cancer, Elizabeth traveled to Ground Zero in New York to assist with serving meals to the Emergency Workers. Mrs. Bourne utilizes her extensive experience in Customer Service, Business Management and Public Records Research to oversee day-to-day operations of the firm.

Marc Bourne, CCIP

Vice President

Marc “PrimeTimePI” Bourne is a Nationally Recognized Private Investigator and a board Certified Cyber IntelliMarc Bourne on ABC Newsgence Professional. An expert in safe hiring practices, workplace violence and loss prevention, Marc Bourne has over 20 years of experience in security, loss prevention, investigations, and public records research. Mr. Bourne has obtained the NAPBS Basic FCRA Certification. He has received numerous commendations and awards including the Outstanding Performance Award by the Greater Philadelphia Chapter of ASIS International, a professional international security organization with over 33,000 members nationwide. In 2003, Marc was one of the Founding Members of the National Association of Professional Background Screeners (NAPBS), an industry association developed to ensure ethical standards, compliance with the FCRA, and to raise awareness of issues related to consumer protection and privacy rights. Today, NAPBS is a global authority on best practices within the employment screening industry. Marc is a frequent speaker on topics relating to employment screening, social media background checks, private security and corporate investigations. In 2012, Marc was a recipient of Bucks County’s Forty Under 40 award sponsored by The Intelligencer and Bucks County Courier Times News Publications.


Marc Bourne with former Second Lady of the US, Dr. Jill Biden

Active in community and charitable affairs in his hometown of Bensalem, PA, Mr. Bourne currently serves as Vice Chairman of the Bensalem Planning Commission. He has previously served as Chairman of the Bensalem Drug and Alcohol Advisory Council and has also served on the Bensalem Emergency Services Advisory Board. He is also a board member on the Bucks County Housing Finance Board. He is politically active locally in the Philadelphia area, as well as on a state, and national level.  Marc Bourne is also on the Academic Advisory Board of the McAfee Institute, an internationally recognized online training institute for Law Enforcement, Loss Prevention and Investigators.

Mr. Bourne oversees the Employment Screening and Investigation Divisions and is the consulting director of the firm.