MARKLEY
Investigations
incorporated

Timely - Reliable - Thorough

Wisconsin Office

Markley Investigations, Inc.

3738 South Duggan Road

Beloit, Wisconsin 53511

Phone: 608-361-1520

License# 15990-062

Office Hours: Monday-Thursday 9:00 am to 5:00 pm
Friday: 9:00 am to 4:00 pm

Call us today for a FREE consultation.

Markley Investigations, Inc. serves your needs through investigations,

process service and surveillance. We are located in southern Wisconsin and northern Illinois.


Licensed and insured in WI, we can get your papers served anywhere in the United States of America. Flat rate and no mileage for most areas.


Our 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.