224 Thompson Street, #244
Hendersonville, North Carolina 28792
Phone 828-891-4263   Cellular 828-691-4263
License No. PI 2352




Located in Hendersonville, NC, Handwriting Forensics was formed in 1990 by Theresa Dean to provide a complete line of handwriting analysis services to business firms, financial institutions, and attorneys whose clients may need signature or handwriting identification in civil or criminal matters, or whenever the integrity of written communication is in question.


Theresa is a graduate of the US Secret Service Questioned Document Course, both Basic & Advanced Course, a graduate of the Bradley Forensic Document Training Course, a graduate of the NC Justice Academy’s Forensic Documents Training Course and was an attendee at the Measurement of Science & Standards in Forensic Handwriting Analysis at the National Institute of Standards & Technology, Gaithersburg, MD. She is also a member of the National Association of Document Examiners, American Board of Forensic Examiners, & Scientific Association of Forensic Examiners.


In 1995, she acquired her Private Investigator’s license in the state of North Carolina and began conducting insurance claims verification surveillance, subject activity logs, and criminal defense investigations. She has been lead investigator on over 30 murder investigations, 22 of which were first degree murder and capital murder investigations. Two of these were featured on National TV, 48 Hours & 20/20 in 2015.  Other investigations also include, voluntary manslaughter, rape, statutory rape, sex offense, statutory sex offense, kidnapping, embezzlement, felonious restraint, assault, & stalking.


Experienced in the courtroom, Theresa has testified as an expert witness over 50 times in a Court of Law and given numerous sworn testimonies in deposition in cases establishing genuineness, exposing alleged forgery, and stating investigative results. The Jury will decide the case based on the evidence provided and witness testimony. Therefore, excellent communication with the Jury is of utmost importance along with clear and easy to understand exhibits.