A-1 Detective Agency
  • Contact Name:

    Darryl Ellis

  • Primary Phone:


  • Established:


  • Mailing Address:

    1751D Howard St. #149
    Chicago, IL 60626

About A-1 Detective Agency

A-1 Detective Agency, Inc. is a full-service private investigation agency based in the Chicago Land area of Illinois, providing professional, confidential investigations and related services to clients throughout the State of Illinois.

We offer a wide range of professional services to law firms, insurance companies, businesses, organizations and private individuals, including criminal & civil investigations, missing person locates, background screening and more.

Your case is as important to us as it is to you and every case we conduct is handled with the highest level of professionalism, diligence and expedience. We utilize the latest information sources, equipment and investigative techniques available to help ensure we obtain the results you need.



N.N.A.-Mobile Notary


  • Witness statements
  • Scene documentation
  • Skip trace Process service - difficult serves are a specialty *
  • Case analysis, trial preparation, evidence management
  • Judgment collection
  • Asset discovery


  • State of Illinois and Nationwide

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