SERVING YOU BY SERVING OTHERS K & L Courts Process Service is a full Court Process service and Private Investigative firm. Located in Saint Charles County, we specialize in very fast, efficient and courteous process service. Our firm is known for hard to serve, rushes, and other special circumstance services. We are fully computerized with all returned legal documents. When you use K & L Courts Process Service and Private Investigations, LLC, we will provide you with superior customer support! We can also provide you with an email/phone call notification of the status of your legal documents. As soon as we serve your documents, an email/phone call will be completed letting you know how service was made.