Advisory Board
Behind Sam Johnson Inc. is a network of specialists shaped by careers in law enforcement, intelligence, litigation, and high-stakes investigations.
Chris Mathers
Global Due Diligence
Chris Mathers spent most of his career working undercover for the Royal Canadian Mounted Police, the US Drug Enforcement Administration, and the US Customs Service, infiltrating organized crime groups across North America, Latin America, the Caribbean, and Europe. He later led KPMG’s Corporate Intelligence department, directing international due diligence, asset recovery, and anti–money laundering operations.
Today, as President of Chris Mathers Inc., he advises corporations and governments on fraud, corruption, cybercrime, and terrorism. A recognized commentator and author of Crime School: Money Laundering, Chris is regularly featured in global media and has consulted on major films and documentaries relating to organized crime and espionage.
Norman J. Groot
Legal Risk & Fraud Recovery
Norman Groot is the founder of Investigation Counsel PC, Canada’s only boutique law firm dedicated exclusively to fraud recovery litigation. His career began in policing, where his early investigative work laid the foundation for a legal practice built around asset tracing, court-ordered production, and aggressive recovery strategies.
A recognized authority in fraud and investigations, Norman acts as Independent Supervising Solicitor on Anton Piller orders and regularly advises investigators, corporations, insurers, and counsel on complex recovery matters. He serves as counsel to national investigative associations, including the Canadian Association of Special Investigation Units, and sits on the board of the Association of Certified Forensic Investigators of Canada.
Christine Robinson
Christine Robinson is the founder of Threat Shield Consulting and has been a certified Behavioural Threat Assessment and Management Specialist since 2015. In 2025, she retired from the Peel Regional Police after a distinguished 30-year career of exemplary service and was awarded the Police Exemplary Service Medal in recognition of her contributions to public safety and law enforcement.
Throughout her policing career, Christine held a wide range of operational and investigative roles, including assignments in Uniform Patrol, Criminal Investigations Bureau, Youth Crime, Intelligence Services, the Special Victims Unit, Offender Management, Internal Affairs, and the Threat Assessment Unit. Her diverse experience provided her with extensive expertise in the investigation, assessment, and management of violent crime and high-risk individuals. In 2019, Christine was recognized as a finalist for the Ontario Women in Law Enforcement (OWLE) Excellence in Performance Award, highlighting her commitment to professional excellence and community safety.
As a Behavioural Threat Assessment and Management Specialist, Christine has collaborated extensively with criminal justice and public safety partners, government agencies, healthcare networks, school boards, post-secondary institutions, community wellness and social service organizations, and private-sector clients. She has delivered specialized training, consultation, and case support focused on identifying, assessing, and mitigating risks to public safety. Her work includes providing professional opinions on risk and developing evidence-based management strategies for cases involving targeted violence, threatening communications, sexual violence, intimate partner violence, stalking, and other complex threat-related concerns.
Christine is widely respected for her practical approach to threat assessment and risk management. She has been qualified as an expert witness in both criminal and civil proceedings, providing specialized testimony on behavioural threat assessment and violence risk issues. She is also a long-standing member and current Director-at-Large of the Canadian Association of Threat Assessment Professionals (CATAP), where she continues to contribute to the advancement of professional standards, education, and best practices within the threat assessment community.
Behavioural Threat Assessment
Belle Yuan
Workplace Investigations
Belle Yuan is the founder of Strategywise HR Inc., a boutique human resources consulting firm focused on impartial workplace investigations, workplace assessments, and advising employers and HR leaders on managing employment risk and associated costs.
A Certified Human Resources Leader with more than 20 years of corporate and human resources experience across commercial and nonprofit sectors, Belle has conducted investigations both within organizations and as an independent third party. Her work as a fact finder is informed by experience with internal organizational dynamics and neutral external investigations.
Belle is a member of the Canadian Association of Workplace Investigators and is regularly retained to investigate allegations of harassment, bullying, workplace violence, sexual harassment, discrimination, reprisals, toxic work environments, policy violations, and employee misconduct.