Consultant services and expert testimony for civil cases in the areas of serology, DNA, bloodstain pattern analysis, and crime scene reconstruction. Located in Florida.

Reconstruction and analysis of shooting incidents. Based in California.

Expert in criminal profiling and crime analysis. Located in Virginia.

Bloodstain splatter analysis and crime scene reconstruction. Based in Arizona.

Case review and expert testimony cases involving alcohol and drug impaired driving offenses. Based in Palm City, Florida.

Law enforcement expertise for litigation involving injuries or losses due to criminal incidents.

Not-for-profit organization assisting law enforcement agencies and victims of sexual and violent crimes with crime analysis and reconstruction, investigation, behavioral profiling, and related forensic services. Houston, Texas.

Expertise on breath and blood alcohol testing, and evaluating hospital and laboratory alcohol reports. Mesa, Arizona.

Toxicology services, including breath and blood alcohol concentration, drug identification, chemical analysis, and consulting on toxins and drugs. Toronto, Ontario.

Forensic consulting and investigative team, based in Oregon.

General incident review and interpretation, by a certified crime scene analyst. Based in Illinois.

Consultative services and expert testimony on forensic matters. Based in Minneapolis, Minnesota. Areas of expertise, consultant biographies, contact information.

Providing consultation and services in the areas of criminalistics and forensic serology to an international clientele. Based in California.

Consultations, expert testimony and training classes.

Proividing forensic scientific services for police agencies in England and Wales, and training, consultancy, and scientific support for many overseas and private sector customers.

Criminal investigative psychology consultant to lawyers, police, and others for rape and serial murder cases. Based in North Carolina.

Corrections consultant for parole, inmate transfers, initial prison placement, and grievances.

Providing information regarding cultivation and use of illicit drugs. Located in Great Britain.

Offering consulting services, including behavioral analysis, assessing the dangerousness of offenders, psychological profiles and geographical profiles. Based in Anchorage, Alaska.

General crime scene and bloodstain pattern analysis. Based in Alberta, Canada.

Providing death and crime scene investigation, photography, and evidence collection services. Fort Lauderdale, Florida.

Offering investigation services for matters including criminal, personal injury, and matrimonial cases, and expert testimony on chemical and psychophysical testing.

Court qualified in crime reconstruction, crime scene analysis, criminal profiling, victimology, and offender signature analysis. Located in California.

Clinical criminologist, based in Ontario, Canada, specializing in alternatives to imprisonment.

In independent practice, offering services for crime scene reconstruction, fingerprint identification, tire tracks, footprints, bloodstain pattern analysis, chain of evidence review. Located in Arizona.

Expert testimony for cases involving child exploitation, and electronic surveillance. Based in Florida.

Firearms identification, shooting accidents, shooting scene reconstructions, crime scene reconstructions, and general criminalistics.

Street and prison gang consultant, offering research, litigation support, and expert testimony, for both prosecutors and defense attorneys.

Consulting forensic scientist, based in Texas.

Expert testimony for capital murder cases and penalty phase mitigation, on the theory that low serotonin, alcoholism and hypoglycemia are linked with impulsive violence.

Broad investigative and analytical services for forgery, identification, chemistry, and crime scene reconstruction. Located in Michigan.

Specializing in forensic ballistics and firearms cases.

Site of investigative criminal psychologist Dennis H. Chevalier; résumé and personal links.

Testing services and expert testimony for drugs, alcohol, and substance abuse, from a board certified forensic toxicologist.