Call for an appointment

(517) 614-1945

​217 W. Washington Street, Suite C

Marquette, MI 49855 US

The professional experiences of Ace Investigative Services is provided to Michigan corporations, small businesses, law firms, insurance companies, and private individuals. 

Ace Investigative Services is licensed and insured and offers accurate, timely reports with local billing from anywhere in Michigan. Your confidentiality is assured at all times. Please contact me for a complimentary consultation or to make specific arrangements for any investigative needs. I am confident Ace Investigative Services will exceed your needs. Thank you for your consideration.

Contact Information

Mission Statement

Brian J. McFadden


With a Bachelor's Degree in Criminal Justice from Kent State University in Kent, OH and over 23 years of experience, I will personally ensure your requests are met. 

About Ace Investigative Services

Brian Mcfadden has joined the team of Bulldog Investigations.

Our firm specializes in helping corporations, small businesses, and individuals with their investigative needs.