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Trusted Private Investigation Services in Oak Harbor, WA
Full Spectrum Investigations & Consulting is a licensed and insured private investigation agency headquartered in Oak Harbor, Washington. With over 35 years of combined law enforcement and investigative experience, our team specializes in expert witness testimony, complex investigations, and consulting services for legal professionals, public agencies, and private clients. Our founder, Frank Vanecek, brings decades of expertise in law enforcement best practices, evidence handling, and forensic analysis to support cases nationwide. We prioritize accessibility, transparency, and client satisfaction, offering free initial consultations to discuss your specific needs. Our services extend internationally, and we maintain rigorous standards of professionalism and integrity in every engagement.

Our team has testified in diverse legal settings, including federal courts, tribal courts, and state legislative bodies, ensuring credible and actionable insights. We focus on delivering tailored solutions through advanced investigative techniques and a deep understanding of legal requirements. Our commitment to excellence is reflected in our comprehensive approach to case review, policy development, and training programs. We serve both public and private sectors, addressing employment-related investigations, security planning, and complex criminal cases. Backed by a proven track record, we aim to provide reliable, ethical, and results-driven services to meet the evolving demands of our clients.
Services
Expert Witness Consulting Investigations Case Review Policy Review Evidence Analysis Security Planning Training Programs
Highlights and features
  • We offer 35+ years of law enforcement and investigative experience.
  • Our services are available nationally and internationally.
  • We specialize in expert witness testimony and complex case analysis.
  • Free initial consultations provide accessible, no-risk engagement.
  • Our team has testified in federal, state, and tribal courts.
Associations and certifications
  • CA PI Lic. # 188713
Services
Expert Witness
Our expert witness services provide authoritative court testimony and case analysis for legal professionals. With decades of law enforcement experience, we deliver credible opinions in federal, state, and tribal courts. Our expertise spans use-of-force evaluations, wrongful conviction claims, and forensic evidence interpretation.
Investigations
We conduct complex investigations for public and private sectors, including homicide, organized crime, and cold cases. Our team utilizes advanced forensic techniques and nationwide resources to uncover critical evidence. Services include witness interviews, evidence collection, and detailed reporting for legal proceedings.
Consulting
Our consulting services focus on employment integrity, policy development, and security planning. We assist agencies with background checks, internal investigations, and compliance protocols. Clients receive tailored strategies to enhance operational efficiency and legal compliance through expert analysis.
People
Frank Vanecek
Managing Director and Founder
Frank Vanecek is a Certified Law Enforcement Instructor with 35+ years of investigative experience across federal, state, and tribal jurisdictions. He specializes in expert witness testimony, evidence analysis, and law enforcement training programs.
Questions
What services does Full Spectrum offer?
We provide expert witness testimony, private investigations, consulting, and policy reviews for legal and public agencies.
Do you offer free consultations?
Yes, we provide free initial consultations to discuss your case requirements.
Where do you operate?
Our services are available nationwide and internationally, with experience in multiple jurisdictions.
What areas do you specialize in?
We specialize in homicide investigations, evidence handling, use-of-force analysis, and law enforcement best practices.
Can you assist with federal cases?
Yes, we have testified in federal courts and grand juries with expertise in complex legal matters.