Lawyers and courts come to PD&A to find experts for
cases in criminal law, personal injury, wrongful death, malpractice, intentional torts,
employment law, family law, trusts and estates, elder law, class action litigation, and
other matters because we offer:

• Internationally recognized authorities
• Multidisciplinary resources
• Thorough evaluations
• Objective case analyses
• Well-reasoned reports
• Understandable testimony

In criminal matters, we evaluate cases on behalf of prosecutors, defense
attorneys, or the court. In civil matters, we evaluate cases on behalf of either plaintiff
or defense.

Our approach to cases was born in 1981 when the Office of the U.S.
Attorney for the District of Columbia asked Dr. Park Dietz to lead the team evaluating
John Hinckley, Jr., for the attempted assassination of President Reagan. The innovative
method developed in that evaluation has been successfully applied to countless cases since
then, including many of the most important cases of the past two decades.

Organizations come to PD&A to find expert consultants,
advisors, and educators. PD&A experts act as consultants to the F.B.I., U.S. Secret
Service, C.I.A., D.E.A., B.A.T.F., U.S. State Department, U.S. Armed Forces, New York and
Virginia State Police, N.B.A., and over 200 Fortune 500 companies. PD&A
experts have worked on matters involving national security, international crises,
corporate crises, and – through our sister company, Threat Assessment Group, Inc. – have
advised corporations on thousands of incidents involving threats to human life, corporate
assets, or consumer products.

Media come to PD&A for on-camera interviews with
experts, technical advice, and coaching of actors. PD&A experts have appeared on
hundreds of documentaries and news shows in the U.S., Canada, Australia, England, France,
Germany, Japan, and Spain, have consulted on major Hollywood films, and regularly advise
the writers and producers of "Law & Order," "ER,"
"Autopsy," and other TV shows.