One significant thing our firm prides itself on is having access and partnerships with a whole list of very qualified experts that help aid in the successful outcomes of our client’s cases. Each of our experts possesses professional expertise in their particular field.

Below are a handful of experts our office uses to help build and strengthen our client’s cases in a way that allows jurors and our clients to better understand our cases’ and the complexity that can accompany them. These experts also assist our office in showing how sometimes what seems to be the smallest detail in a case may have the most significant impact on the overall outcome.

  • Daniel Billington II

    Daniel Billington, ACTAR #1913, is an Accredited Collision Reconstructionist and Human Factors Expert specializing in Forensic Visibility Analysis.  He is a former Deputy Sheriff from Waukesha County, WI, with 18 years in law enforcement.  After beginning his career in the private sector in 2009, he now operates a private consulting practice, Great Lakes Forensic Experts, that provides expert support for legal and insurance professionals.

    With thousands of training hours and extensive experience in the field of collision reconstruction, Mr. Billington has been called upon to provide expert support and testimony throughout the United States and abroad.  Mr. Billington’s focus on the details and integrity are unimpeached; he is an expert whose tenacity has helped win cases on both sides of criminal and civil matters.  As a seasoned lecturer, Mr. Billington has spoken for the National College of DUI Defense at the Harvard School of Law, national conferences, and many state organizations throughout North America.

    Mr. Billington is accredited by the Accreditation Commission for Traffic Accident Reconstruction.  He previously served as the chairman of the Theory Test Development Committee, whose purpose was to produce testing questions and criteria for candidates who have applied for accreditation testing. He is also a member of the Society of Automotive Engineers and the Illuminating Engineering Society.  Mr. Billington has earned a bachelor’s degree in Criminal Justice and a master’s degree in Organizational Management.

  • Joseph Anderson, Ph.D.

    Joseph Anderson, Ph.D., holds a B.S. in Chemical Engineering from Arizona State University and both an M.S. and Ph.D. in Chemical Engineering from the University of Washington. Dr. Anderson is an Affiliate Assistant Professor of Bioengineering at the University of Washington and the owner of Anderson Bioscience, a biotechnology consulting company. He has extensive training in bioengineering and physiology. His nearly 30 years of research addressing the exchange of chemicals in the lungs has resulted in more than 50 peer-reviewed publications and 3 book chapters. He has helped develop devices to treat severe pulmonary emphysema, to measure exhaled breath acetone, and to detect COVID infection using breath measurements.

     Dr. Anderson’s area of expertise focuses on the mechanisms by which the lung exchanges material and energy between the blood, tissue, and breath. He is an expert in the theory and practice of measuring concentrations of various products in the breath and evaluating measurement uncertainty.

    Dr. Anderson’s legal consulting services typically focus on the new paradigm of lung alcohol exchange and biologic factors affecting the measurement of alcohol in the breath and above the skin. He has expertise in the science and practice of alcohol breath testing, transdermal alcohol testing, and mathematical modeling of physiological systems. For additional information, including publications, visit or contact him directly at

  • Jan Semenoff

    Jan Semenoff is the principal editor of Counterpoint, a scientific literacy journal for legal professionals. Mr. Semenoff is well-known across Canada and the United States as an experienced Forensic Criminalist. He has testified as an expert in breath alcohol testing, Standardized Field Sobriety Tests (SFST) and Drug Recognition Expert (DRE) issues in morethan 150 jury trials and has presented at more than 60 states, national and international Conferences.

    Mr. Semenoff studied social and physical sciences and educational theory at the University of Saskatchewan. Following this, he earned an Advanced Certificate in Police Studies from the Canadian Police College and was an Instructor at the Saskatchewan Police College. He has been a member of numerous advisory boards and association executives over the years. Mr. Semenoff worked as an Emergency Medical Assistant with the local ambulance service for four years, then joined the Saskatoon Police Service. Mr. Semenoff retired after an 18-year career as a Senior Constable and Violent Crimes Analyst.

    Because of his policing background and extensive experience with breath alcohol testing, Mr. Semenoff became involved with lawyers and other legal and forensic professionals who looked to him for an understanding of the science behind the police-administered tests. He has been invited to collaborate with lawyers, scientists, investigators, investigative reporters, and toxicologists across Canada and the United States, bringing a fresh perspective and understanding to the science involved in litigation. Mr. Semenoff was the principal technical advisor to The New York Times in their year-long investigation of breath testing deficiencies in North America and has been interviewed by numerous national media outlets, including newspapers, radio, and television.

  • Lance A. Platt, Ph.D.

    Lance A. Platt is the president and owner of Platt and Associates Impaired Driving Consulting located in Bryan, Texas. Mr. Platt was previously employed with the Texas A&M University System “Texas Engineering Extension Service TEEX” as a law enforcement training program coordinator and law enforcement instructor. Mr. Platt was also responsible for the training and management of the Texas Drug Evaluation and Classification Program (DECP/DRE), as well as several nationally recognized impaired driving training programs and initiatives in Standardized Field Sobriety Testing (SFST) and law enforcement training. Mr. Platt has also taught defensive tactics (PPCT), level 1 special weapons and tactics (SWAT), KRAV Maga (level 1), arrest, search, and seizure, criminal interdiction, first-line supervision, field training officer, basic instructor, cultural diversity and interaction, racial profiling, use of force, criminal and crime scene investigation and threat and risk assessments for municipalities and educational institutions.

    Mr. Platt served as a police officer with the city of College Station, Texas, attaining the rank of master police officer, which is the highest peace officer certification in the state of Texas. Mr. Platt received his Bachelor of Science degree from Sam Houston State University, his Master’s Degree from Texas A&M University, and his Doctorate from Texas A&M University. Mr. Platt’s dissertation topic was titled “An Evaluation of the National Highway Traffic Safety Administration Horizontal Gaze Nystagmus test at a .08 Blood Alcohol Concentration for the State of Texas.” The courts nationwide including have recognized Mr. Platt as an expert in DWI Detection and Standardized Field Sobriety as well as drugged driving and have qualified Mr. Platt as an expert in law enforcement policy and procedures, including training and use of force issues in state and federal courts.

  • Rosalind Horowitz

    Professor Rosalind Horowitz examines relationships between Orality and Literacy in order to understand human development and the conflicts and resolutions in communication and life. She examines the centrality of oral discourse for reading and writing in binational, bicultural immigrant, and multi-lingual populations. Her research is based on contributions from Russian cognitive psychology, linguistics, and speech-rhetorical theory. In over 100 publications, she has examined how written language is influenced by speech or interacts with speech to facilitate comprehension and understanding. Horowitz conducts research that examines spoken and written communication in Law, Medicine, and the Humanities. Horowitz is a National Academy of Education, Spencer Fellow; a University of Minnesota Doctoral Graduate and Centennial Awardee for 1905 – 1985, Recipient of a Harvard University Scholarship. Horowitz has been active in higher education for 50 years and is a full professor at The University of Texas at San Antonio, a Research1 and Hispanic Serving Institution. Horowitz has presented her research across the globe at professional meetings in Japan, Hungary, Russia, Belgium, Turkey, Spain, France, Mexico, Argentina, Australia, Greece, Israel, and Canada. Horowitz is the Editor of The Routledge International Handbook of Research on Writing, with chapters on speaking and writing, a 600-page volume released in 2023.

  • Suzanne Perry

    Suzanne C. Perry, the founder of Salient Analytical Services, is a 40+ year veteran of mass spectrometry and analytical chemistry technology, providing analyses and meaningful data to clients in university, medical, and corporate scientific laboratories. Ms. Perry completed her B.S. (Hons) and M.S. (Hons) degree using Gas chromatography–mass spectrometry (GC/MS) in Biochemistry at Rutgers University, and has advanced technical knowledge and experience in Comprehensive two-dimensional gas chromatography-mass spectrometry (GC/GC/MS), Liquid Chromatography with tandem mass spectrometry (LC/MSMS), High Performance Liquid Chromatography (HPLC), Enzyme-linked immunosorbent assay (ELISA-immunoassays) and related technologies. At Mycogen Corporation (now Dow AgroSciences), she was responsible for the development of immunoassays and has received two international patents for her work. This informed her of the critical gaps between hospital clinical screens and forensic analyses for the detection and quantitation of drugs and alcohol in blood versus serum.

    She studied at the BCIT School of Nursing and obtained her Venipuncture Certificate in Phlebotomy in 2016. Ms. Perry routinely consults and testifies on matters of Approved Medical Practices (AMP) regarding forensic and hospital/clinical blood collection. This hands-on certification rounded out her ability to speak on “Draw to Data” issues in forensic toxicology analysis of alcohol and drugs, especially with regard to hospital clinical analyses versus forensic level analyses. She has lectured twice on the FDA 2019 recall of the grey cap blood alcohol tubes from Becton Dickenson and their impact on the reliability of the analytical results, as well as the current 2022 FDA Class 2 Recall of grey capped tubes for off-gassing isobutylene. From 2016 to 2018, Ms. Perry was a Contract Faculty Member at Kwantlen Polytechnic University in the area of Criminology, Criminal Justice, IT, and Environmental Protection Sciences.

    Ms. Perry developed the largest nonprofit mass spectrometry core facility in western Canada under the direction of 1993 Nobel Prize-winning chemist Dr. Michael Smith at the University of British Columbia. There, she taught analytical chemistry and technology at both graduate and undergraduate levels. During her 23-year tenure, she provided thousands of chemical analyses for hundreds of university, non-profit, and corporate research clients globally in a host of biological samples: blood, urine, tissue, and cerebral spinal fluid. Her lab’s analyses are cited in over 60 peer-reviewed medical and scientific papers around the world. Ms. Perry was a chromatography column consultant and distributor for polyLC INC (USA) for over eight years as well as a technology transfer consultant to ISO-accredited labs, which deepened her expertise in guiding scientists in achieving analyte separation, characterization, and quantification.

    She has been providing drug and alcohol analytical reviews and scientific opinions in both Canada and the US at the municipal, district, Superior and Supreme Court levels over 80 times. She has testified in over 120 APS hearings. She provides comprehensive reviews of the data in criminal, civil cases as well as on behalf of public defenders since 2014. She has testified in the states of WA, CA, MA, GA, ID, CO, FL, and IL as well as 3 Canadian Provinces. She has experience with data from analytical labs in 17 states and those of the Canadian National Forensic Laboratory Services – including forensic, hospital/clinical, DOJ and contractual corporate labs. Her work encompasses review of DUI (alcohol/drugs), seized drugs, workplace drug testing and sobriety compliance testing and screening, child custody cases, ante- and postmortem analyses, hospital analyses, and personal injury cases. She is competent in the review of not only blood but urine, and other postmortem specimens for analytes as well as solid drug analysis.

    Ms Perry has been an invited lecturer and instructor for Continuing Legal Education (CLE for medico-legal topics combining science and the law to audiences including judges, prosecutors, law enforcement and attorneys over 23 times since 2016. As an invited speaker, she has been honored to present her CLE credited lectures at the MCDAA Baltimore, CDLA San Diego and Los Angeles (2023), and NACDL, and NCDD conferences in 2016, the Florida Bar Continuing Legal Education Committee – Criminal Law Section 2018 and 2021, Montana Association for Criminal Defense Lawyers, Texas Criminal Defense Lawyers Assn. (TCDLA) 2022, Washington Foundation for Criminal Justice in Seattle every year between 2018-2021, DUIDLA San Diego 2019 and 2020 OACDL.

    Ms. Perry provides her services to defense and prosecutors. She has been registered with the CPCS with the State of Massachusetts as both an Analytical Chemist and Phlebotomist since 2019. Ms. Perry is a dual citizen of the US and Canada who can work legally in both countries. She is based in Vancouver, BC, Canada, but also maintains a home in Southern California, so she may also be located there throughout the year. Ms. Perry works in the Pacific Time Zone and can best be reached at or by cell phone worldwide at 1-778-881-9765.