Investigation methods detective: detective work explained

02. November 2022

Investigation methods detective: detective work explained

The goal of every detective is to be able to pass on valid evidence to his clients. To achieve this goal, the private detective uses different investigation methods in his detective work. But what exactly do detectives do? How do they proceed and what options do they have?

It is important to say that the detective will discuss all investigative methods with you before they are applied. In general, the detective is in close contact with you during his work and also discusses his plans with you first. Thus, you are always in the picture about what is happening and can bring your own ideas.

The investigative methods of the detective can be roughly divided into two areas of investigation: the private area, and the economic, business area. In both areas, different approaches are required and therefore different investigation methods are used.

Private detective investigation methods

In the private sector, it often happens that you as a customer have an accusation against a certain person, which you would like to have checked. In this case, the target person is observed in his or her private environment and everyday life. The investigation methods differ depending on the accusation. A common case is the accusation of infidelity. Especially in this case private detectives are very skilled and the classic observation is used. It is very important to remain undetected. The observation brings in many cases good evidence, if it is documented. Thus, it can also help in cases of stalking, stalking, fraud or theft and is a popular method of investigation.

Other investigation methods in the private environment are those of research and questioning. Here, interviews are conducted in the environment of the suspected person, all of which are always carried out inconspicuously. The searches in particular often take place online. For this, a lot of experience and technical expertise is essential to achieve good results. Especially the internet has a lot of important information and evidence hidden. All that is needed here is the necessary knowledge to access it. Classic areas in the private environment where private detectives can help with their investigation are infidelity, fraud, alimony fraud, custody dispute, search for persons, neighbor dispute, stalking or mobbing. For these different incidents and the possible methods of investigation, it is best to seek comprehensive advice from the private investigator of your choice.

Investigation methods of a business detective

Detectives also help out in the economic and professional environment. Here, the methods of investigation differ slightly from those in the private environment. In the area of undercover investigations, for example, infiltration can take place. This is relatively expensive, but very effective and inconspicuous. For this purpose, a new employee is infiltrated into the company for a certain period of time. At eye level, the detective can now find out a lot, other workers are usually trusted and you are on the same level. In this case, different situations can now be investigated. These include, for example, slander, insurance fraud, wage continuation fraud, expense fraud, theft, secondary employment and many other incidents. Here, too, the detective work can vary and the investigation methods can be different.

The procedures of private detectives are individually adapted to the situation. Most often, detective work is an interplay of several investigative methods that are particularly effective in combination. A good research online, as well as through interviews almost always belongs to it, as well as an observation. This usually provides the best and most valid evidence, which can also be used in court. The protection of the commissioned persons is always the first priority. Therefore, no matter which method of investigation is used, it must be done very discreetly. The detectives must not attract attention. The detectives have acquired a lot of experience to ensure that this does not happen and what must be taken into account.

Individual investigation methods are case dependent

It is therefore clear that no two investigations are alike. The case is individual and the procedure varies. When you hire a detective, the first step is a comprehensive consultation. Here you can describe your situation and your problem in detail and perhaps present already collected evidence. It is very important for the detective to be well informed, the more information the better. Any information, no matter how small, can be important for the investigation process, so a comprehensive conversation is very important. Based on this information, the next steps and planning are discussed. When a far-reaching plan has been determined, it is presented to the client. Before this strategy is not approved, there will be no investigation.

Even during the investigation work, the private investigator is in close contact with his or her client. This is very important because the person is most closely involved in what is happening and therefore has the most knowledge. Often, during the investigation work, when clues are found or progress is made, more information comes to mind that will further the work. The methods of investigation are constantly adapted and refined. Here too, each new step is communicated with the client. Close communication and exchange is very important in detective work and should always be carried out.

These are the most common methods of investigation of a detective

These are the points you should pay attention to when choosing a detective. Accordingly, common investigation methods are research on persons, observations, checking premises for listening devices or bugs, etc., online research, interviews or infiltrations. Sometimes new ideas are also a good way to reach the goal, in order to be able to react flexibly to different situations. In this case, a lot of experience is always important, so that a detective knows which step would be best and most effective in any situation. Here, confidentiality should also always be the focus, since it is often very private matters.

Do you have an unsightly suspicion? Are you a victim of stalking or bullying? Do you suspect someone at your work? In all these situations and more, detectives can help you with their modern investigation methods. Whether in the private or in the business environment, the detective will ensure you with different, modern investigation methods to provide valid and sustainable evidence. Thus, you will finally have certainty and can breathe easy. Let us advise you now on the various investigation methods. The first telephone consultation is free of charge and without obligation and should first give you an overview of what is possible. Contact your detective now by phone, e-mail or drop by directly in person.

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Certificates and memberships


International Detective Association

I.D.A. International Detective Association is an international and transnational network of private and business detective agencies that promotes and supports the wealth of experience and information between detective agencies and investigators at an international level.


Koordinator Betriebliche Ermittlungen

The IHK certificate was obtained by PRIMECHECK in a three-part training course and ended with the certificate ” Koordinator Betriebliche Ermittlungen”. The certification is offered by VSW in cooperation with the Chamber of Industry and Commerce.


DEKRA certified according to DIN 9001: 2015

Our company is Dekra certified according to DIN 9001: 2015, which guarantees you constant quality management of our company processes and constant quality assurance. For reliable cooperation at the highest level and to continuously improve the quality of our service.


Deutsche Gesellschaft für Kriminalistik

Members of the DGfK – Deutsche Gesellschaft für Kriminalistik are exclusively proven experts in criminalistics. The DGfK promotes the exchange of science, practice, education and training in the field of criminalistics.


Association of international private detectives

The PRIMECHECK detective agency is a member of the VID and thus part of a worldwide network of professional private detectives, which guarantees a competent exchange on an international level.

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