Provides polygraph, lie detector, voice analysis, drugs testing and associated services to corporate clients, government and individuals. Dudley, United Kingdom.

Offers private investigations in the Phoenix, Tucson, Tempe, Mesa and Scottsdale areas of Arizona. Provides details of services which include crime scene, criminal, and civil investigations and polygraphy.

Polygraph examiner in Leatherhead, Surrey, UK.

Hagerstown, Maryland, polygraph and investigation agency.

Provides details of the services offered in Manchester and Edinburgh including professional expert witness and assessments service for evidential use in criminal, civil and disciplinary proceedings.

Professionally trained polygraph examiner offering lie detector tests in Scotland and the UK.

Offers polygraph tests. Provides details of services, credentials, choosing an examiner and an FAQ.

Polygraph examiners serving Australia and the Asia Pacific region.

East Hartford, Connecticut agency providing examinations and drug testing.

Austell, Georgia detective agency offering polygraph examinations.

Polygraph and lie detector testing for relationship, theft, employee screening and family issues.

Provides a range of lie detection services including for attorneys, private testing, law enforcement and clinical testing. Serving Arizona.

Conducts polygraph testing and investigations in California and throughout the USA. A certified service provider offering services in Spanish and English.