Naples, Florida · State & Federal Practice · Nationwide Reach
Gilbertson Investigations Inc. keeps its office in Naples, and Professor Gilbertson is retained from that address by counsel across the state and across the country. A Florida firm gets a police practices expert on Florida time, working to the same record standards that govern every engagement, with a nationwide practice standing behind the opinion. Inquiries are accepted from attorneys and law firms; no opinions are offered to individuals, and no legal advice is given.
Attorney and law-firm inquiries only
Gilbertson Investigations Inc. is based in Naples, Florida, and Professor Gilbertson works from that address for counsel throughout the state and throughout the country. Professor Gilbertson brings 38 years of criminal justice experience, and the expert practice dates to 2014: years in uniform, years in the classroom teaching the same standards officers are trained to meet, and years of investigative casework for attorneys preparing matters for trial.
Inquiries are accepted from attorneys and law firms. Professor Gilbertson is not an attorney. He offers no legal advice, gives no opinions to individuals, and makes no attorney referrals. A person who believes a police practices question sits inside a case should retain counsel first, and counsel can bring the matter forward from there. Legal conclusions remain counsel's throughout; the expert addresses police practices and the standards those practices are measured against.
What Florida counsel get is a police practices expert on Florida time and the same record discipline applied in every other engagement, whichever side sends the file. Retentions come from plaintiff's counsel in civil rights matters, from the criminal defense bar, and from counsel defending officers and agencies. The analysis does not shift with the party who retains him: the same national standards, the same complete record, the same opinions, stated the same way. The retention path and the published terms are set out on the For Counsel page.
Professor Gilbertson's testimony has been admitted in the state courts of Florida, and it has not been excluded at trial in any state or federal court. Florida matters appear in the practice file, criminal defense work among them, and the published Florida result below is drawn from it. Other entries, with the jurisdiction and disposition as published by retaining counsel, sit in the full case history.
State of Florida v. Ivan Alberti Sierra, Murder 2nd Degree, Self Defense (Deposition), Dismissed.
Florida is a stand-your-ground state, and self-defense casework is a standing lane of this practice. That lane covers criminal defense counsel whose client was lawfully armed, and civil matters where a defensive use of force is at issue.
The framework, the case types and the scope of an engagement are set out on the self-defense and firearms expert witness page, and immunity matters are treated on the stand-your-ground immunity page. Counsel who want the terms laid out plainly before sending a record will find stand-your-ground versus self-defense in the Library. This page routes to that work rather than restating it.
The Naples address fronts a nationwide practice. Retentions have come from counsel in 42 states and the District of Columbia, in civil rights litigation and in criminal defense, and that body of work is what a Florida firm reaches when it retains an expert who sits in Naples. The jurisdictional range is described further in the Library guide to the jurisdictions a nationwide expert covers.
Opinions now come from a table of three experts rather than from a single witness. Each expert reviews the record independently and forms analysis and opinions within their own discipline, each summarizes that work in writing for the primary author, and the report is co-authored. Primary authorship rotates with the focus of the report. Their combined law enforcement and criminal justice experience runs past 110 years. The seats at that table, and the discipline each one holds, are set out on the Roundtable of Subject Matter Experts.
The deepest state record is Washington, and it is told in full on the Washington record. For the judicial treatment of the qualifications behind this work, the homepage sets out the court's ruling in Alvarez v. King County.
Every engagement opens with a conflict check, and counsel hears about a conflict immediately rather than late. A first inquiry holds nothing privileged: case type and posture, jurisdiction and case number, the deadlines that matter, what the record holds so far, and the parties to run for conflicts. That is enough to gauge fit and scope a review. Privileged material is never exchanged by email, and nothing privileged should travel with a first inquiry. The Library note on what to send with a first inquiry covers it item by item.
After retention the record travels on physical media: a computer flash drive or an external hard drive, by mail or courier. Online sharing services are not used, and there is no upload portal to ask about. Depositions are taken by Zoom or a similar platform, so a Florida deposition does not wait on anyone's travel calendar. Reports require sixty days of advance notice, which means counsel working toward a Florida disclosure deadline should count backward from that date before the drive goes in the mail.
The published fee schedule, the travel terms and the discovery list counsel assembles all sit on the For Counsel page, and a Florida firm works from the same terms as a firm anywhere else. For a Florida trial date, travel runs on those published terms, and venues within driving distance are billed under the same published schedule. Retaining counsel remains responsible for the admissibility of reports and testimony, and no outcome is promised in any matter.
Attorney and law-firm inquiries only. Conflicts are checked before anything substantive, and you will hear about a conflict immediately.
You will hear back directly. If the matter is urgent, call (239) 571-1840.