Timely - Reliable - Thorough

Wisconsin Office

Markley Investigations, Inc.

3738 South Duggan Road

Beloit, Wisconsin 53511

Phone: 608-361-1520

License# 15990-062

Illinois Office

Markley Investigations, Inc.

515 North Court Street, Suite 101

Rockford, Illinois 61103

Phone:  815-316-1141

License# 117.001345

Member PAWLI-

Professional Association of Wisconsin Licensed Investigators

PAWLI Link

Markley Investigations, Inc. serves your needs through investigations,

process service and surveillance in  southern Wisconsin and northern Illinois.


For Investigation, Process Service, Surveillance, we will serve your needs in Madison,

Janesville, Beloit, Milwaukee, Monroe, Rockford, Belvidere and all cities in between.


Licensed and insured in IL and WI, we can get your papers served anywhere in The United States of America. Flat rate. No mileage.


Markley Investigations, Inc. investigators have over 150 years of investigative background.


Our investigators are timely, reliable, thorough and confidential. Please see  Our Staff pages for individual investigators experience.

Member NALI-

National Association of Licensed Investigators