Private Investigation Secrets: What You Need to Know

## The Reality Behind Private Investigation Television has given most people a distorted picture of what private investigators do. The reality is less glamorous — and far more effective. Professional investigative work is built on patience, documentation, and a deep understanding of what's legal and what isn't. The gap between the Hollywood version and the real thing matters, because clients who come in with unrealistic expectations often make decisions that compromise their own cases. Understanding how professional investigation actually works helps you get better results, spend your money more wisely, and avoid the mistakes that can turn a strong case into a weak one. Here's what you actually need to know. ## Surveillance Is Mostly Waiting — and That's the Point The most common investigative service is also the most misunderstood. Effective surveillance means blending in, staying patient, and documenting everything precisely. A single day of surveillance can yield hours of footage — or nothing at all. Both outcomes are informative. What most people don't realize is that the waiting is strategic. Experienced investigators study a subject's known patterns before committing to field time. They identify the locations, times, and circumstances most likely to produce useful documentation. A surveillance operation that yields nothing on day one isn't a failure — it's data that shapes the next approach. The equipment matters too. Professional surveillance uses high-definition video cameras with optical zoom capable of capturing clear footage from significant distances. GPS tracking devices (deployed legally on vehicles owned by the client in appropriate circumstances) can establish location patterns before a single hour of physical surveillance begins. Dashcam footage, timestamped photographs, and detailed written logs all contribute to a case file that can withstand legal scrutiny. What surveillance cannot do is manufacture evidence that isn't there. If the subject isn't doing what you suspect, a professional investigation will tell you that — and that finding is just as valuable as confirmation. ## Legal Boundaries Are Non-Negotiable A licensed PI can observe and document activity in public spaces. They cannot trespass, hack accounts, access private records without authorization, intercept communications, or conduct surveillance in locations where a reasonable expectation of privacy exists. Any investigator who claims otherwise is either lying or operating illegally — and any evidence they gather will be inadmissible. Worse, it can expose you to civil liability and potentially criminal charges for conspiracy. In New Hampshire, private investigators are licensed under RSA 106-F. The statute defines what investigators can and cannot do, and violations carry serious consequences including license revocation and criminal prosecution. When you hire a licensed investigator, you're hiring someone who has agreed to operate within these boundaries — and who has professional and legal incentives to stay there. You can read more about our approach on our [Our Approach](/our-approach) page. The legal framework isn't a limitation on what investigators can accomplish. It's the foundation that makes their findings useful. Evidence gathered legally, documented properly, and presented credibly is evidence that actually moves cases forward. ## Databases Are Powerful — and Limited Professional investigators have access to legal data aggregators that go far beyond what a Google search returns. These tools — licensed commercial databases used by law enforcement, attorneys, and licensed investigators — can surface current and historical addresses, vehicle registrations, business affiliations, known associates, court records, and more. The depth of these databases is genuinely impressive. A skilled investigator can often establish a subject's current address, employer, vehicle, and daily patterns before conducting a single hour of physical surveillance. This pre-investigation research phase is what separates efficient investigations from expensive fishing expeditions. But these databases have real limits. No legal database gives a PI access to private financial records, medical information, sealed court documents, or the contents of private communications. Anyone claiming otherwise is either confused about what they're accessing or accessing it illegally. The other limitation is accuracy. Database records are only as current as the last update, and errors are not uncommon. Professional investigators cross-reference multiple sources and verify database findings through independent means before treating them as established facts. A single database hit is a lead, not a conclusion. ## OSINT: The Digital Layer Every Investigation Uses Open Source Intelligence — OSINT — has become one of the most powerful tools in the modern investigator's toolkit. OSINT refers to the systematic collection and analysis of information from publicly available sources: social media platforms, public records, court filings, property records, business registrations, news archives, and more. Our dedicated [OSINT investigations service](/services/osint-investigations) applies this discipline to cases anywhere in the world. What makes OSINT particularly valuable is that people reveal far more about themselves online than they realize. Location check-ins, tagged photographs, public posts about daily routines, and follower networks can all provide investigative leads. Even accounts set to "private" often leak information through mutual connections, tagged posts, and platform metadata. OSINT is typically used in the pre-investigation phase to build a subject profile before physical surveillance begins. Knowing a subject's vehicle, employer, gym, and social circle before you ever put eyes on them makes field work dramatically more efficient. The legal and ethical boundaries of OSINT are clear: investigators can analyze publicly available information. They cannot access private accounts, encrypted communications, or any data that requires unauthorized access. The line between public and private is sometimes less obvious than it appears — which is one reason professional judgment matters. ## Documentation Is Everything The difference between useful evidence and useless information is documentation. Timestamped video, GPS-corroborated location data, and detailed written logs are what make findings actionable — especially in court. A professional case file includes: a chain of custody for all evidence, timestamped photographs and video with metadata intact, written surveillance logs noting times, locations, and observations, and a final report that presents findings clearly and accurately. This level of documentation serves multiple purposes. In family law proceedings, it gives attorneys something concrete to work with. In insurance fraud cases, it gives adjusters and defense counsel the documentation they need to act. In civil litigation, it gives the trier of fact a clear, credible record. Investigators who don't document to this standard aren't just doing inferior work — they're producing evidence that may be challenged, excluded, or used against their client. The documentation standard is not optional. ## What Separates Good Investigators from Bad Ones The private investigation industry has a wide range of practitioners. At one end are licensed, experienced professionals with court experience, proper insurance, and a track record of producing admissible evidence. At the other end are unlicensed operators, online "background check" services that sell recycled public records, and individuals who will take your money and deliver nothing useful. Here's how to tell the difference: **Licensing and insurance** — In New Hampshire, private investigators must be licensed under RSA 106-F. Ask for the license number and verify it with the NH Department of Safety. Professional investigators also carry errors and omissions insurance and general liability coverage. If they can't produce proof of both, walk away. **Transparency about methods** — A professional investigator will explain how they work, what they can and cannot do, and why. If someone is vague about their methods or claims capabilities that sound too good to be true, they're either incompetent or dishonest. **Realistic expectations** — No legitimate PI guarantees results. Investigations are fact-finding exercises, not outcome-manufacturing services. An investigator who promises to "get you what you need" regardless of what the facts show is telling you what you want to hear. **Clear written agreements** — Scope, cost, and deliverables should be in writing before any work begins. A professional engagement agreement protects both parties and ensures everyone understands what the investigation will and won't cover. **Court experience** — Many investigations eventually support legal proceedings. An investigator who has testified in court understands how to build a case file that holds up under cross-examination. Ask about their court experience before hiring. **References and track record** — Established investigators have a history of cases and, where confidentiality permits, references from attorneys and past clients. A new operation with no track record is a higher risk. ## The Consultation: What to Expect and How to Prepare The first step in any professional investigation is a confidential consultation. This is where you explain your situation, the investigator asks clarifying questions, and both parties determine whether a professional investigation is the right approach. Come prepared. The more information you can provide, the more accurate the assessment will be. Useful information includes: the subject's full name and any known aliases, last known address, vehicle description and plate number, employer and work schedule, known daily routines, and any relevant history that might affect the investigation. Be honest about what you know and what you suspect. Investigators are not there to judge your situation — they're there to help you get facts. Withholding information because it's embarrassing or complicated usually makes the investigation less efficient and more expensive. The consultation is also your opportunity to assess the investigator. Do they listen carefully? Do they ask good questions? Do they give you a realistic picture of what's possible? Do they explain their methods clearly? A good investigator will tell you if your situation doesn't warrant professional investigation — and that honesty is a sign of professionalism, not a sales failure. ## Common Mistakes Clients Make **Conducting a parallel investigation** — One of the most damaging things a client can do is conduct their own investigation while a professional is working the case. Tipping off the subject, confronting them prematurely, or sharing information with third parties can compromise the entire investigation. Once you've hired a licensed investigator, let them work. **Expecting immediate results** — Effective investigations take time. Surveillance requires patience. Database research requires verification. Rushing the process produces inferior results. Trust the timeline your investigator gives you. **Sharing findings prematurely** — Before an investigation is complete, sharing partial findings with attorneys, family members, or the subject can compromise the case. Wait for the final report before taking action. **Hiring based on price alone** — The cheapest investigator is rarely the best value. An investigation that produces inadmissible evidence, incomplete findings, or legal complications costs far more than the fee you saved. **Not understanding what you're paying for** — Investigative work is billed by time and expenses. Understand the billing structure before work begins, and ask for regular updates so you can make informed decisions about continuing or adjusting the scope. ## Working With a PI Effectively The client relationship in a professional investigation works best when it's built on clear communication and mutual trust. You provide the context and objectives; the investigator provides the methodology and findings. Stay available for questions. Investigators sometimes need additional information mid-case, and delays in getting answers can mean missed opportunities in the field. Respond promptly to updates and be clear about any changes in your situation that might affect the investigation. Review the final report carefully. Ask questions about anything that's unclear. If the findings support legal action, share the report with your attorney before taking any steps — the attorney can advise on how to use the evidence most effectively. And if the investigation doesn't produce what you hoped for, take that seriously. A finding of no evidence is still a finding. It may mean the suspected behavior isn't happening, or it may mean the timing or approach needs adjustment. A professional investigator will help you interpret the results honestly. --- Kreymer Investigative is a licensed private investigation firm serving clients throughout New Hampshire — including [Manchester](/private-investigator-manchester-nh), [Nashua](/private-investigator-nashua-nh), [Salem](/private-investigator-salem-nh), [Derry](/private-investigator-derry-nh), and [Portsmouth](/private-investigator-portsmouth-nh) — and Massachusetts. All consultations are confidential. [Contact us](/services) to discuss your situation.