Business Details
38 Years
experience
Trusted Investigative Services in Philadelphia
Since 1988, Keystone Intelligence Network has provided investigative, security, and training services to private sector, law enforcement, and governmental entities globally. Our team of seasoned professionals, including former federal agents and international associates, delivers thorough investigative work, advanced polygraph testing, and specialized training through the Academy for Scientific Investigative Training (ASIT). Licensed as Private Detectives in New Jersey and Pennsylvania, we have maintained a trusted presence in Center City Philadelphia since 1996. Our expertise spans fraud investigations, forensic auditing, executive protection, and applicant screening, including serving as the official polygraph examiners for the Philadelphia Police Department and SEPTA Police Department.With over 125 years of combined field experience, we prioritize integrity, urgency, and precision in every engagement. Our global reach extends through subsidiaries in Cairo and Singapore, and our clients include Fortune 500 companies, law firms, and municipal agencies. The Academy for Scientific Investigative Training, under our umbrella, leads in polygraph and interrogation training worldwide, conducting programs in over 20 countries. Our commitment to innovation is evident in proprietary methodologies like the Integrated Zone Comparison Technique and Forensic Assessment Interview Technique. Recognized for excellence, we have contributed to resolving high-profile cases and advancing forensic science through research and publications.
Services
Investigative Services
Security Personnel
Polygraph Examinations
Forensic Auditing
Executive Protection
Fraud Investigations
Forensic Interviews
Training Courses
Applicant Screening
International Investigations
Details
- Year established: 1988
Highlights and features
- We offer 35+ years of experience in investigative and forensic services.
- Our team includes former federal agents and polygraph experts with global expertise.
- We are the official polygraph examiners for Philadelphia Police Department.
- Our proprietary methodologies advance forensic science and interrogation practices.
- We maintain a global network of investigators and training facilities.
Services
Investigative Services
Keystone conducts complex domestic and international investigations, including fraud, theft, and criminal cases. Our team leverages a global network of former federal agents to deliver actionable intelligence for law firms, corporations, and government agencies. With over 25 years of experience, we ensure discreet, thorough, and legally compliant outcomes tailored to client needs.
Polygraph Examinations
As the largest polygraph team in the tri-state area, we provide applicant screening and forensic testing for law enforcement and private clients. Our examiners, trained at APA-accredited schools, utilize proprietary techniques like the Integrated Zone Comparison Method to ensure accuracy in criminal, corporate, and security-related investigations.
Forensic Auditing
Our forensic accountants investigate financial discrepancies, tax evasion, and business disputes. With expertise in IRS compliance and offshore disclosure programs, we deliver detailed analyses of financial records to support litigation, regulatory compliance, and corporate governance for clients nationwide.
Security Personnel
Keystone offers armed and unarmed security for events, retail, and executive protection. Our personnel are trained in threat assessment and crisis management, ensuring client safety through customized security plans and real-time risk mitigation strategies.
Training Courses
Through the Academy for Scientific Investigative Training, we deliver polygraph, interrogation, and forensic analysis courses globally. Our curriculum, developed by industry pioneers, equips law enforcement and private professionals with advanced techniques in deception detection and investigative interviewing.
People
Nathan J Gordon
President and Founder
Nathan Gordon founded Keystone Intelligence Network and developed groundbreaking forensic techniques. He has lectured globally for agencies like the FBI and CIA and authored multiple texts on polygraph and interrogation methods.
William L. Fleisher
Director
A former FBI agent and U.S. Customs official, Fleisher oversees investigations and training. He received the U.S. Customs Distinguished Service Medal and co-authored leading interrogation textbooks.
Benjamin Redmond
Executive Director
Redmond, a retired IRS inspector general, directs investigative operations and liaises with law enforcement agencies. He previously served as Philadelphia's Inspector General for nine years.
Darrell O'Connor
Director of Special Operations
O'Connor has 45+ years of investigative experience, including roles with the FBI and U.S. House of Representatives. He specializes in security and counterintelligence operations.
Joseph Downs
International Investigator
A retired FBI agent, Downs focuses on white-collar crime and international investigations. His expertise includes foreign counterintelligence and cross-border fraud cases.
Questions
What services does Keystone Intelligence Network offer?
We provide investigative services, polygraph testing, forensic auditing, security personnel, executive protection, and specialized training through our Academy for Scientific Investigative Training.
Are your polygraph examiners certified?
Yes, all examiners are trained at American Polygraph Association and International Society of Polygraph Examiners accredited schools and recognized globally for expertise.
Do you offer international investigative support?
Yes, we have a global network of investigators and subsidiaries in Cairo and Singapore to support cross-border cases.
What training programs are available?
Our Academy offers polygraph, interrogation, forensic interviewing, and statement analysis courses conducted worldwide for law enforcement and private professionals.
How experienced is your team?
Our principals have over 125 combined years of experience, including former federal agents, IRS officials, and FBI personnel with global investigative expertise.
