Private Investigations

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About Us

CK Investigations is defined by integrity, expertise, ethics, and professionalism. Headquartered in Wausau, we are one of Wisconsin's' most reliable private investigation and process service providers.

The best investigators combine in-depth knowledge and experience with integrity and diligence, and those words describe our firm precisely. We take pride in our outstanding reputation and consistently give our clients a strong reason to recommend us to others.

When you collaborate with us on your investigation, you can trust that we’ll employ time-tested technology and techniques to produce results. Our investigators are highly trained and bring a wealth of experience to your investigation. They operate under the highest standards of professionalism and ethics, and they make effective communication a priority so you are always aware of your case’s status.

Contact us today and one of our professional investigators will gladly answer any questions you have. You can also quickly learn about investigations by visiting our Investigation FAQ section.


Our investigative services are all backed by 30 + years of experience, training and meticulous attention to detail. Our full line-up of services includes:


Discreet, persistent surveillance performed by investigators who know precisely what to look for and what evidence to gather.

Public Search Record

Rapid location of the information you require through targeted searches of selected public records resources.

Infidelity/Cheating Spouse Investigations

Thorough investigations to confirm or alleviate suspicions that a spouse or significant other is cheating.

Asset Search

Comprehensive asset investigations to determine which assets an individual or business possesses.

Background Check

In-depth examinations of the subject’s background to verify employment qualifications, check criminal backgrounds, investigate potential spouses, and more.

People Locate/Skip Trace

Location of missing or hard-to-find persons using online searches, surveillance or any other methods the case requires.

Service of Process

We value communication and will always keep you updated on the progress our investigator has made on your case or the status of service of process. All investigations and serves will begin with a written agreement with the plan and estimated costs. Any overage from the retainer will be promptly returned to the client along with the statement of charges. We provide written reports with applicable photos and videos for our clients. It is our goal to not only find the information you seek but document it in an easy-to-follow yet professional way.

Please call (715) 581-3020 or fill out our form below for a qualified process server in Wisconsin.

Investigation & Process Serving Info

If you have a question about service of process, chances are that many people have asked the same question before you. Here are answers to some of the questions we hear often:

What is a private investigator?

A private investigator is a professional who is employed to collect intelligence and verify or discredit information. Many professional investigators possess law enforcement backgrounds or other experience and education that they leverage to investigate and research.

Why hire a professional private investigator?

Professional private investigators are adept at analyzing a situation and finding the best starting point. From there, they rely on experience, knowledge, and technology to uncover information and follow the trail of evidence wherever it leads. Investigators are trained in legally and ethically obtaining information which they present in a manner that is admissible in court.

Instead of trying to investigate on your own and risking legal trouble or other problems, or hiring an unqualified person, trust your investigation to a qualified, experienced professional.

What qualifications should an investigator have?

Requirements for private investigators vary from state to state. Many states require licenses, insurance, continuing education or other credentials, or a combination of those things. When hiring an investigator, you should make sure the person has the required credentials in the area where the investigation will take place.

How to work with an investigator

After you choose an investigator to handle your case, the professional will typically consult with you to learn more about the situation. Any information you can provide will give the investigator a good idea of where to begin. As the case progresses, the investigator should provide you with detailed status updates to let you know what is happening. At the conclusion of the case, the investigator will present you with a report that contains relevant information and evidence obtained during the investigation.

What is service of process?

According to United States legal procedure, all parties must be notified if they are facing legal action against them in a court of law. Notification (called service of process) is accomplished through delivery of documents describing the legal action, and those documents include subpoenas, complaints, summonses, writs and order to show cause.

What does a professional process server do?

A process server is responsible for delivering legal documents to the parties involved in court proceedings. Some states require process servers to be licensed or registered, and all process servers must adhere to all state regulations governing legal service of process.

Process servers typically locate the individual named on the document, travel to that person to deliver the documents, verify the person's identity before handing over the papers, and then provide their client with a signed proof of service. This proof of service - also called the affidavit of service - details the time, date and location of the service of process, and the subject's name. It is the document you can present in court to verify that successful service of process occurred.

Why do I need a process server?

Service of process must be carried out by a professional who understands the state laws, is well-versed on best practices and is licensed if required in that state. Any failure to follow legal procedures can result in legal issues for other parties in the court case, which is why you should leave service of process to a professional. An experienced and knowledgeable process server will do everything by the book and make it easy to demonstrate that you fairly notified the other parties of impending legal action.

We’re always available to answer your questions, so please contact us if you need more information about investigations.

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Areas of Service

  • Wausau, WI
  • Central WI
  • State of Wisconsin


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    Contact CK Investigations, LLC today with any questions, inquiries, or work requests. Call us at (715) 581-3020 or fill out our form.


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