Shane Harrington, PhD, MBA

Agency Principal, Licensed Private Investigator (OR & WA) 


Upon further review, you will see that Dr. Harrington's credentials are unparalleled in the industry of professionals conducting criminal defense investigation. 


He has an Associate of Arts (AA) degree from Columbia Basin College (CBC) in Pasco, WA and while his purpose was in completing a General Studies degree, Dr. Harrington's concentration was in Business and Communications. 


Given his aptitude and advanced skills, Dr. Harrington was appointed to a leadership role in CBC's Student Government as the Program Coordinator. In this role, he managed the student program budget and supervised a staff of four team members. He also served as President of the Speech and Debate Team and played Intramural Football and Basketball. 


Dr. Harrington attended the University of Alaska-Anchorage (UAA) as a Justice student, specializing in Criminal Investigation when he lived in Anchorage, AK. As a student, he completed the Emergency Medical Technician (EMT) program, earning a 4.0 GPA. 


Soon after, Dr. Harrington became a licensed EMT in Alaska, Washington and was certified nationally. He utilized this experience as a volunteer EMT, working with a Cardiologist and as a Basic Life Support (BLS) Instructor for a regional hospital, teaching the American Heart Association's (AHA) First Aid, Cardiopulmonary Resuscitation (CPR) and Automated External Defibrillation (AED) courses. Dr. Harrington did this for over 8 years, also serving as a BLS Instructor Trainer. 


Dr. Harrington continued his education and graduated with a Bachelor of Arts (BA) degree from the Washington State University (WSU) campus in Richland, WA. His degree was in Social Sciences, with a concentration in Criminal Justice, Management and Psychology. 


This academic training, combined with a strong business acumen, equipped Dr. Harrington with the ability to develop his own investigative research and consulting firm in 2001. This was also when he sought to expand and improve his skills by earning a Master of Business Administration (MBA) degree from City University of Seattle, via the satellite campus there in Richland, WA. 


His MBA concentration was in Project Management and Strategic Planning and Dr. Harrington completed the three-year program in only 18-months, earning a 3.53 GPA. He also obtained a Graduate-level Certification in Project Management from City University of Seattle, while attending. 


Academically, Dr. Harrington took a five year break, before setting his sights on earning his Doctor of Philosophy (PhD) degree in Psychology from Walden University. This is typically a five-year program that he completed in less than three-years, earning a 3.94 GPA. His specific emphasis was in Health Psychology and Investigative Research. 


It is with these acquired skills and adaptive experience that Dr. Harrington approaches every aspect of conducting a competent, thorough investigation. While the outcome, or result of a legal matter can never be guaranteed, Dr. Harrington pledges to work fervently in acquiring what you need, with the hope of securing the best outcome possible.

Professional Memberships


  • Lifetime Member, Psi Chi International Honor Society in Psychology
  • Current Member, National Association For Public Defense (NAPD)
  • ​Current Member, Oregon Association of Licensed Investigators (OALI)
  • Current Member, Washington Association of Licensed Investigators (WALI)
  • ​Current Member, Washington Defender Association (WDA)
  • ​Former Member, National Defense Investigator Association (NDIA)
  • Former Member, Washington Association of Criminal Defense Lawyers (WACDL)
  • Former Member, American Psychological Association (APA)
  • Former Member, American Psychology Law Society (APA, Div. 41)
  • Former Member, Society for Occupational Health Psychology (SOHP)
  • Former Member, American Society for Quality (ASQ) 


Academic Credentials 


  • Post-Doctoral Research focus in Investigative Psychology & Forensic Victimology
  • PhD in Health Psychology & Investigative Research, Walden University, 2011
  • MBA in Project Management & Strategic Planning, City University of Seattle, 2003
  • Certified Project Manager (Graduate-level), City University of Seattle, 2002
  • BA in Criminal Justice & Management, Washington State University, 2000
  • AA in General Studies (Business & Communications) Columbia Basin College, 1999
  • Emergency Medical Technician Certification, University of Alaska-Anchorage, 1998 


Work Experience 


    Principal, Licensed Private Investigator
      HARRINGTON INVESTIGATIONS P.C.
      January 2013 - Present 


    Consultant, Investigative Researcher
      HARRINGTON CONSULTING
      January 2001 - Present 


Specialized Training


  • Criminal Defense Investigation
  • ​Investigative Report Writing
  • ​Missing Child Investigation
  • ​Public Speaking
  • Forensic Victimology
  • Homicide Investigation
  • Forensic Interviewing
  • ​Project Management
  • ​Investigative Psychology
  • Workplace Investigation
  • ​Business Administration
  • ​Sexual Assault Investigation
  • Missing Adult Investigation
  • ​Conducting Surveillance Operations
  • Psychological Testing & Intervention
  • Neuropsychological Assessment
  • Stress, Coping & Grief Therapy
  • Emergency Medical Interventions
  • Firearms Training & Qualification
  • ​Investigations involving Mental Health Issues

Client Reviews

Mark Baum, Attorney 

Baum Law Office in Olympia, WA (360) 918-7300 


"I have had the continuing opportunity and pleasure of working with Dr. Harrington on newly charged and appellate cases in Thurston County, Washington. In each of those cases, Dr. Harrington proved himself as a standout investigator not only in his continuing desire to excel in his efforts but in his willingness to develop a better understanding of the law and how his investigation will therefore, be impacted. 


Dr. Harrington works collaboratively with me and excels as he skillfully devises investigative strategies, goals and outcomes and in his ability to synthesize case facts and critically analyze issues leading to on-point field research and analysis. When given the opportunity to thoroughly examine a legal problem, Dr. Harrington consumes it with a relish for getting to the heart of the issues and devising creative results. 


Dr. Harrington is a man of high moral character and integrity. He is a tireless worker who continually strives to improve in his profession." 


Corey Evan Parker, Attorney 

Law Office of Corey Evan Parker in Issaquah, WA (425) 221-2195 and Manhattan Beach, CA (424) 456-3193 


"Shane is by far the best investigator I’ve ever had the pleasure of working with. On numerous occasions, he has strategically conducted witness interviews that uncovered favorable evidence for my client. He has also successfully tracked down witnesses or evidence I was seeking on many occasions. He even tracked down a former juror at her home and she agreed to sign a declaration related to a case that was over 11 years old. 


Shane is always extremely responsive. My emails and texts are returned immediately whenever I reach out to him. He is always professional and pleasant to work with. He keeps me updated on his progress regularly and has an emphasis on getting results. As someone who has worked with a number of investigators over the years, there is no one more easy to work with, more thorough, more prompt, and more results driven than Shane. I highly recommend him for any investigative assignment." 


Preston White, Attorney 

Law Offices of Preston White in Olympia, WA (360) 556-9825 


"Shane Harrington provides a valuable investigative resource. Dr. Harrington is a skilled, thorough investigator, with keen intuition, and a firm grasp of both the psychology, and the practice of investigation. His efforts have been a real momentum changer in improving outcomes of trial, plea negotiations, and in some cases, have led to dismissals of charges. He tailors his services to meet the needs of clients, and attorneys, and does so in a way that is cost effective, and provides significant added value.” 


Shelley Ajax, Attorney 

Ajax Law Firm in Kennewick, WA (509) 783-3330 


"As an attorney with both a Superior Court and Homicide contract, I have the opportunity to work on some of the most challenging cases that come through the criminal docket. Shane is the investigator I trust to assist me on the majority of my cases. He works efficiently and is effective in acquiring what I need, asking the difficult questions, when required. He can handle virtually any interview or assigned task and does so with integrity. Of all the investigators I have dealt with throughout the years, I know that I will receive a fair and impartial report on any interviews he does outside my presence. That is the most important factor that I look for in an investigator.” 


Karla Kane-Hudson, Attorney 

Karla Kane, PLLC in Pasco, WA (509) 545-4646 


“Shane is someone that I would trust to do what it takes on any case that is assigned to him. He is able to remain focused and deliver what is needed at the time it is needed. This is extremely important in our line of work. He has consistently met every deadline given to him, even if it means that he works late evenings and weekends. He is dependable, dedicated and committed to any task he is assigned. I would recommend him without reservation.” 


Sonia Cook, Attorney 

Sonia Cook, Attorney at Law, PLLC in Pasco, WA (206) 724-7367 


“I had the pleasure of working with Mr. Harrington this past winter to investigate a Physical Control case that hinged upon the testimonial evidence of several witnesses. Mr. Harrington did an excellent job of understanding what we were looking for, interviewing witnesses and keeping me informed of his results and progress. It was clear to me that Mr. Harrington was a professional with much experience and I was happy to have his assistance on my case. With his help, we were able to reach an excellent result for our client.” 


Sam Swanberg, Attorney & Benton-Franklin County Superior Court Judge 

Law Offices of Sam Swanberg in Kennewick, WA (509) 396-7087 


"It is my pleasure to recommend Shane Harrington as a defense investigator. My recommendation is based on utilizing Mr. Harrington’s services several times in this capacity and finding him to always do an excellent job.” 


Kevin Kennedy, Executive Director 

5150 to Recover Foundation (509) 851-3187 


“As a PhD in psychology, Dr. Harrington has an exceptionally unique skill set, which provides insight into how to approach those who struggle with mental illness, especially among those who find themselves within the confines of the criminal justice system. I have witnessed firsthand through his volunteerism and advocacy, that Dr. Harrington is a champion of this cause."