Meet Our Experts

Tom “Grif” Griffin served 27 years with the Colorado Bureau of Investigation (CBI) as a criminal investigator and laboratory agent.  While there, he provided analysis and testified as an expert witness in Colorado district courts and/or federal courts in bloodstain pattern analysis (BPA), crime scene reconstruction (CSR), shooting incident reconstruction (SIR), and crime scene investigation (CSI) and in the forensic analysis of fire debris, controlled substances, and primer residue (GSR). Prior to working at CBI, he was a criminalist and crime scene investigator at the Greeley, Colorado Police Department for four years.  As a partner in BGA, he continues casework and testimony in BPA, CSR, and SIR and instructs BPA and CSR classes across the United States.

Griffin is International Association for Identification (IAI) certified as a Senior Crime Scene Analyst (CSCSA), a Bloodstain Pattern Analyst (CBPA), and a Crime Scene Reconstructionist (CCSR). He served several years as a member of the IAI Bloodstain Pattern Certification Board and now serves on the IAI Crime Scene Certification Board.  He is a member of the Organization of Scientific Area Committees (OSAC) Bloodstain Pattern Analysis Subcommittee and its Validation Task Group.  Grif was a charter member of the Scientific Working Group on Bloodstain Pattern Analysis (SWGSTAIN).  He has served as president of the International Association of Bloodstain Pattern Analysts (IABPA) and a Distinguished Member of that association.  Griffin has also served as president of the Association for Crime Scene Reconstruction (ACSR), the Rocky Mountain Division of the IAI, and the Rocky Mountain Association of Bloodstain Pattern Analysts (RMABPA), as well as participating on various committees for these associations. He is also a member of the Southwestern Association of Forensic Scientists (SWAFS), the United Kingdom’s Fingerprint Society (FPS), and the American Chemical Society (ACS).

Griffin is a founding member and past president of NecroSearch, International, a group dedicated to the detection of clandestine graves and serves as a permanent member of its board of directors. He has co-authored articles on the detection of clandestine graves, the investigation of mass crime scenes, and analysis of bloodstain patterns. He has instructed at bloodstain pattern workshops for the annual IAI educational conferences. He has been featured speaker for presentations in Canada, the United Kingdom, the People’s Republic of China, and throughout the United States. He also regularly instructs on various aspects of crime scene investigation at law enforcement academies in Colorado. Grif also continues to participate in seminars and training programs to keep abreast of advancing techniques and technologies.