Lesnevich & Detwiler: Forensic Document and Handwriting Laboratory

Lesnevich & Detwiler: Forensic Document and Handwriting Laboratory

Khody R. Detwiler

7550 Woodbury Pike Roaring Spring, PA 16673

About the Expert

With over 55 years of experience specializing in the examination and analysis of signatures, writings, and documents, Lesnevich & Detwiler is one of the most sophisticated private forensic document laboratories in the United States; including the capabilities to perform all aspects of non-destructive forensic document and handwriting examinations. We are often retained (both nationally and internationally) by law firms, government agencies, insurance companies, banking institutions, corporations and other private entities to handle any issue involving the authenticity of documents, writings and signatures in both civil and criminal matters. We are court qualified in state, federal and international jurisdictions; and have earned a stellar reputation for producing highly-effective court demonstratives in support of our findings when providing expert witness testimony in every matter.

Areas of Expertise

  • Document Examination Forensic
  • Handwriting

Expert's Profile

Lesnevich & Detwiler are forensic document experts who specialize in all aspects of non-destructive handwriting and document analysis. Operating out of one of the most sophisticated, private forensic document laboratories in the United States, we provide detailed, proprietary findings reports and high-quality graphics for attorneys, government agencies, insurance agencies, and mid to large sized businesses. With our reports in hand, our clients can confidently go to court or make an internal decision about the nature or authenticity of a writing, signature, or document.

We are court qualified in State, Federal, and International Courts, and we are fully-equipped to handle aany issues involving the authenticity of documents, writings, and signatures in both criminal and civil matters, such as: • anonymous letters • wills and other testamentary documents • medical records • insurance policy forms • deeds and mortgages • checks and banking transaction documents • threatening letters • and contracts and agreements.

We also offer extensive litigation and investigative support in the form of confidential consultation regarding the Forensic Document Examination discipline as a whole including assistance with evaluating and interpreting the credentials and opinions of other practitioners.

Examinations we conduct regularly are: • handwriting and signature analysis • electronic signature examination and verification • and non-destructive ink and indentation analysis.

Our state of the art laboratory contains: • Video Spectral Equipment to conduct specialized non-destructive infrared and ultraviolet examinations of inks, papers, and other materials • Electrostatic Detection Equipment can visualize and develop indented writings (either visible or latent) appearing on the surface of documents • as well as other specialized lighting and laboratory instrumentation, including stereoscopic binocular microscopes to conduct any type of microscopic analysis that may be necessary.

When providing expert witness testimony, we produce and present high-quality, highly-effective court illustrations and graphics to assist judges, juries, and arbitration panels in understanding our findings. We practice on the belief that education is not only essential in any expert retention, it is the cornerstone to a successful outcome.

Notable cases:

-Retained by the Pennsylvania Innocence Project and Dechert LLP in the successful exoneration of Shaurn Thomas (Philadelphia, PA)
-Fletcher et al. v. Doig et al.
-Republic of Guinea (Simandou Mining Rights)
-Paul D. Ceglia v. Mark Elliot Zuckerberg and Facebook Inc.
-AlGosabi (AHAB) vs. Maan Al Sanea (SAAD Group) (Al Khobar, Saudi Arabia)
-Chevron v. Donzinger, et. al., (S.D.N.Y.); Aguinda v. Chevron (Lago Agrio, Ecuador); Chevron v. Republic of Ecuador (The Hague, Netherlands)
-Estate of Badri “Arkady” Patarkatsishvili (Tbilisi, Republic of Georgia)
-Sanum Investments Ltd v Government of the Lao People’s Democratic Republic
-The Islamic Bank of Asia Limited v. Ahmad Hamad Algosaibi & Brothers Company (Singapore)
-Kenneth Starr, Office of Independent Counsel (Whitewater Investigation)
-Lawrence E. Walsh, Office of Independent Counsel (Iran-Contra Affair)
-U.S. vs. Osama Bin Laden (U.S. Embassy Bombing in Africa)
-U.S. vs. Wesley Snipes
-U.S. vs. Lawrence Cusack (President Kennedy Papers)
-People vs. Anthony D. Marshall and Francis X. Morrissey, Jr. (Brooke Astor)

Additional Areas of Expertise:

We offer services regarding all aspects of Forensic Document Examination including: Bank Forgery, Insurance Fraud, Document / Record Analysis, Document Analysis, Document Classification, Document Comparison, Document Examination, Document Identification, Document Imaging, Document Retrieval, Electrostatic Image Analysis, Facsimile Identification, Indented Writing Development, Forensic Document Examination, Forensic Handwriting Comparison, Forgery, Handwriting and Document Analysis, Handwriting Analysis, Handwriting Comparison, Handwriting Examination, Handwriting Identification and Elimination, Signature Analysis, Signature Examination, Signature Verification, Ink Chemistry, Ink Dating, Ink Differentiation, Paper Dating, Paper Differentiation, Paper Identification, Photocopy Identification, Questioned Documents, Records Alterations, Signature Disputes, Text / Font Analysis, Typewriting Identification / Analysis, Document Origination and Authentication, Handwriting Authentication, Signature Authentication, Forgery Detection (insertions, obliteration(s), page substitutions, font discrepancies and security features), Non-destructive Ink and Paper Analysis (Video Spectral Analysis - VSC: Infrared and Ultraviolet), Non-destructive Indentation Analysis (Electrostatic Detection Apparatus - ESDA), typewriter / typewriting Analysis, Counterfeit Detection, Document Preservation, Deciphering Obliteration(s), Electronic Signature Analysis and Verification, Elder Abuse Fraud, Sexual Harassment, Anonymous and Threatening Letters and Communications, Wrongful Termination, Workplace Violence, Laboratory Services, Forensic Science, Reports, Expert Reports, Depositions, Production of Court Exhibit Illustrations, Court Demonstratives, Expert Consulting and Expert Witness Testimony.

**CV is available upon request**

Call us Today: (814) 793.2377 - Roaring Spring | (412) 430.3887 - Pittsburgh | (215) 800.0120 - Philadelphia

Personal Achievements


  • American Society of Questioned Document Examiners (ASQDE) - http://www.asqde.org
  • American Academy of Forensic Sciences (AAFS) - https://www.aafs.org
  • Mid-Atlantic Association of Forensic Scientists (MAAFS) - http://www.maafs.org
  • Northeastern Association of Forensic Scientists (NEAFS) - http://www.neafs.org
  • Midwestern Association of Forensic Scientists, INC. (MAFS) - http://www.mafs.net
  • International Association for Identification (IAI) - https://www.theiai.org

Listed in the Following States

Lesnevich & Detwiler: Forensic Document and Handwriting Laboratory is listed with ExpertPages in the following jurisdictions: All US Regions and States, Canada (all Provinces).