Professional, Discreet Investigations
Infidelity & Custody Investigations
ICU INVESTIGATIONS is “Michigan’s Leading Infidelity Investigators”. ICU INVESTIGATIONS was founded by Peter Kourtesis in January 2003. Mr. Kourtesis graduated from Wayne State University with a B.S. degree in Criminal Justice and a B.A. degree in Psychology. Mr. Kourtesis is also a Member of the “International High IQ Society”.

Why Choose Our Investigation Services
Professional, Discreet, and Reliable Surveillance Solutions
At ICU Investigations, our licensed investigators are committed to delivering results with the utmost discretion and integrity. Discover the features that set us apart and ensure your peace of mind throughout the investigative process.
Licensed & Experienced Investigators
Our team consists of fully licensed professionals with extensive experience in relationship investigations and evidence gathering.
Absolute Discretion & Confidentiality
Every investigation is conducted with the highest level of confidentiality, ensuring your privacy is always protected.
Court-Ready, Lawful Evidence Gathering
We gather and document evidence that is legally admissible, supporting your needs in personal, legal, or financial matters.
Our Services
Professional Investigation Solutions
Surveillance & Documentation
Covert observation and comprehensive reporting to provide clarity and peace of mind. All investigations are conducted within legal and ethical boundaries.
Background Checks & Identity Verification
Access reliable background information and identity verification using public records, ensuring thoroughness and confidentiality.
Photographic & Video Evidence Management
Secure storage and handling of all photographic and video evidence, maintaining integrity and chain-of-custody for legal use.
Client Testimonials
Hear from individuals who have trusted ICU Investigations for discreet, professional investigations.
ICU Investigations handled my case with the utmost discretion and professionalism. I received clear, realtime evidence that helped me make informed decisions. Highly recommended for anyone seeking reliable answers.

Jessica L.
The investigators were extremely thorough and made me feel supported during a difficult time. Their confidential approach ensured my privacy was always respected.

Michael P.
I was impressed by the quality of service provided. The evidence gathered was court-ready and instrumental in my legal proceedings. Thank you for your integrity and dedication.

Samantha R.
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Take the First Step Toward Clarity
Professional, Discreet & Confidential
All of our Infidelity and Custody Investigations are done Professionally, Discreetly, and Confidential. We gather evidence to be used for personal purposes and court purposes. Our surveillance is obtained with a high success rate of gathering the information necessary to get the results the client is looking for.




Our Mission and Values
At ICU Investigations, our mission is to provide individuals with clarity and peace of mind through professional, ethical, and discreet private investigations.
We are committed to upholding the highest standards of confidentiality, ensuring every case is handled with sensitivity and respect. Our licensed investigators adhere strictly to legal guidelines, prioritizing integrity and your trust above all else.