Eight Kinds of Cases Private Investigators Might Solve

Private investigators handle a wider range of cases than most people expect. Beyond the familiar image of trailing a cheating spouse, the same investigative skills get used to vet a new business partner, catch a dishonest employee, verify a suspicious insurance claim, trace a missing relative, or build evidence for a custody dispute.

Below are eight kinds of cases private investigators are regularly hired to solve, what usually triggers each one, and the kind of evidence the investigation typically produces. If you are still deciding whether your situation actually needs one, see our guide on when to hire a private investigator. If you have already decided, our guide to hiring a private investigator covers what to expect, what it costs, and the questions worth asking first.

1. Infidelity and Relationship Investigations

This is the case type most people associate with private investigators, and for good reason, it remains one of the most common. A client notices a change in routine, unexplained absences, or a partner being unusually protective of their phone, and wants clarity rather than assumptions. An investigator establishes a discreet pattern of surveillance, documents where the subject actually goes and who they meet, and delivers a factual report with time-stamped evidence, photos, or video where relevant. The goal is never to confirm what the client wants to hear, only what actually happened.

2. Pre-Employment and Background Checks

Businesses hire investigators before bringing on a senior employee, a household staff member, or a new supplier, to confirm the person is who their CV and references say they are. This can include verifying employment history, checking for a pattern of complaints at previous jobs, confirming qualifications, and looking for red flags that a standard reference call would miss. It is far cheaper to catch a problem before signing a contract than to deal with the fallout afterward. This is the core of our research, intelligence & verification service.

3. Workplace Theft and Employee Misconduct

Stock disappears, cash does not reconcile, or a manager suspects an employee is running a side business on company time. Internal audits often cannot pinpoint who is responsible without tipping everyone off first. An investigator can run discreet surveillance, review access and transaction patterns, and in some cases go undercover, to identify exactly who is involved and build a case the business can act on with confidence, whether that means dismissal, recovery of losses, or a police report. We handle this under our corporate investigations service.

4. Insurance Claim and Fraud Investigations

Not every claim is what it appears to be. A fire that started under unusual circumstances, an accident with inconsistent witness accounts, or a theft claim with no forced entry can all warrant a closer look before an insurer pays out. This is where insurance investigation work overlaps directly with loss adjustment, a discipline licensed and monitored in Tanzania by the Tanzania Insurance Regulatory Authority (TIRA). A firm that handles both can verify the real circumstances of a loss, cross-check the claim against the physical evidence, and produce a report an insurer can actually rely on, saving genuine claimants time and protecting insurers from claims that do not hold up. See our article on why independent loss adjustment matters for more on how this works.

5. Business Partner and Investment Due Diligence

Before signing a partnership agreement, taking on an investor, or acquiring a stake in a company, it pays to know exactly who you are dealing with. Investigators look into a prospective partner's business history, past disputes or litigation, financial stability, and reputation in the market as part of a structured due diligence engagement. This kind of due diligence has quietly saved clients from partnerships that looked promising on paper but were built on shaky ground.

6. Missing Persons and Skip Tracing

A family member cuts off contact, a debtor moves without leaving a forwarding address, or someone simply stops answering calls and messages. Investigators use a combination of interviews, records checks, and tracing techniques to build a picture of where a person went and how to reach them. This applies equally to a worried family trying to reconnect and a business trying to locate someone who owes them money.

7. Child Custody and Family Disputes

Custody and family court matters often turn on evidence of how a parent is actually behaving, not just what is claimed in court filings. Investigators document real patterns, such as whether pickups and drop-offs happen as agreed, whether a child is being properly supervised, or whether an ex-partner is concealing income relevant to maintenance payments. The evidence is gathered to inform a fair outcome for the child, not to score points between parents.

8. Asset Tracing and Debt Recovery

Someone owes money, whether through a personal loan, a business dispute, or a divorce settlement, and appears to have far less than they actually do. Investigators trace property, vehicles, business interests, and other assets that may not be obvious from a bank statement, giving lawyers and clients the information needed to pursue what they are actually owed. This kind of tracing often runs alongside our forensic & financial investigations service, particularly where the missing assets stem from misappropriation rather than an ordinary debt.

The Eight Case Types at a Glance

Frequently Asked Questions