When to Use a Private Investigator—and When Not To
· Roberts Investigative Services

Start With the Question, Not the Investigator
An investigator is useful when a material fact can be developed through records, interviews, observation or fieldwork. The first decision is not which firm to hire. It is whether investigation is the right instrument for the question.
The test is simple to state and harder to sit with: what fact would change what I do next? If you can name it, it can usually be scoped, priced and worked. If you cannot, an investigation will produce activity and expense without producing a decision.
What a Private Investigator Does
Licensed investigators locate people, research records, interview willing witnesses, conduct lawful surveillance, document scenes, and produce reports that separate observation from inference.
They do not exercise police powers. They cannot compel anyone to speak, issue subpoenas, make arrests, access sealed records, or determine that a crime occurred. Those limits are not modesty — they are the boundary of the licence, and an investigator who blurs them is a risk to the case rather than an asset to it.
When Investigation Is the Right Instrument
- A specific, checkable fact is in dispute. Where someone was, whether a session occurred, whether a document says what a party claims, whether a witness exists.
- A person needs locating for a legitimate purpose — a witness, an heir, a judgment debtor, a relative.
- Perishable evidence needs preserving now. Third-party CCTV, scene conditions, a witness about to relocate.
- A claim needs independent verification before a hiring, tenancy, investment or care decision.
- Counsel needs facts developed that the file does not contain — mitigation history, an alternative timeline, an uninterviewed witness.
When It Is Not
- The question is legal, not factual. Whether a contract was breached or a duty owed is for a lawyer. An investigator can gather what happened; only counsel can tell you what it means.
- The answer will not change anything. If you will act the same way either way, the expenditure buys certainty, not a decision — and often does not even buy that.
- What you want requires an unlawful method. Intercepting communications, accessing accounts, or placing a tracker without authority. These are declined by any licensed firm, and pursuing them tends to damage the case they were meant to help.
- It is an emergency. If someone is in danger, the answer is 911, not an investigator.
- You want vindication rather than information. This is the most common and least discussed reason investigations disappoint. A report can establish facts; it cannot make anyone else accept them.
Talk to a Lawyer First
If a matter is heading toward court, speak to counsel before commissioning anything. Two reasons.
First, counsel can tell you whether the fact you want established would actually matter to the outcome. It is common for a client to spend heavily proving something legally irrelevant to their case.
Second, where litigation is anticipated, counsel may prefer to retain the investigator through the firm. Work-product protection depends on the relationship, purpose and jurisdiction, and is not automatic — but the practical benefit is real: an unfavourable finding arrives as legal advice rather than as a report already circulating.
What to Look For
- A Florida licence number. Agencies hold an "A" licence and individuals a "C" licence under Chapter 493. Both are publicly verifiable.
- A written scope stating what will be done, what will not, and what happens when the budget is reached.
- Documentation discipline. Contemporaneous notes and reports that distinguish what was observed from what was inferred. On cross-examination the questions are about method.
- Willingness to decline. An investigator who agrees to everything you ask has not thought about which parts are lawful.
- A straight answer to the awkward question: what happens if the evidence does not support what I believe? The correct answer is that you will be told.
What the Value Actually Is
The value is a better-supported decision, not a promised outcome. No investigator can guarantee a finding, a result, or that evidence will be admitted — the court decides admissibility.
A responsible firm will tell you when the available method is unlikely to answer your question, and when counsel, law enforcement or another specialist should be involved first. That conversation is worth more than the retainer it may talk you out of.
If any of this sounds familiar, we offer professional surveillance, injury and workers' compensation claims and St. Lucie County.
Private · No Obligation
Find out whether an investigation can help.
Describe the question you need answered. A licensed investigator will explain what can be done legally, what information would help and what the likely scope will be.