Welcome to ACS Professional Investigations

Founded in 1995 by Steve Crane, ACS began with a mission to offer loss prevention consulting services to middle-market companies in Detroit, Michigan, and surrounding areas. Evolving over the years, ACS excelled in surveillance and claims investigations, gaining recognition as a leader in insurance claims investigations. A pivotal moment came in 1997 when ACS was honored as Walmart’s Vendor of the Year for Outstanding Video Surveillance, marking a significant milestone in its growth.
Over the next decade, ACS steadily expanded its presence across eleven states while maintaining a steadfast focus on its core competencies. In 2005, recognizing a market need, ACS strategically expanded into mortgage fraud investigations, growing its team by over 60 staff investigators in seven years.
As market dynamics shifted, ACS refocused on regional investigative services, reaffirming its commitment to exceptional service for law firms, insurers, corporations, and individuals across the Great Lakes and Midwest regions.
In 2017, ACS’s impact extended beyond business success when Steve Crane assisted a juvenile lifer in Detroit, leading to the discovery of new evidence and eventual release after 25 years in prison. This success spurred ACS’s involvement in numerous criminal cases, including the exoneration of two wrongly convicted individuals. Steve Crane, now a Board Certified Criminal Investigator, continues to support indigent defense attorneys with evidence gathering and witness interviews.
ACS has been nominated as “The Best Private Investigator in Detroit, Michigan” every year since 2019 Expertise, reflecting its resilience, adaptability, and unwavering commitment to excellence.
Today, licensed across five states (IN, KY, MI, OH, WI), ACS is poised for the next 25 years as a leading super-regional provider of diverse investigative services including insurance, corporate, legal, domestic, loss prevention, and financial investigations.

Why Choose ACS Professional Investigations

Excellence & Dedication in Investigative Services

At ACS, we bring over 25 years of experience, unmatched expertise, and a proven track record of success in handling complex cases. Our award-winning team, licensed across five states, is dedicated to providing thorough, reliable, and discreet investigations for insurance, corporate, legal, domestic, and financial needs. Trust us to deliver exceptional service and results.

Proven Expertise

Over 25 years of experience in various investigative services.

Award-Winning Team

Recognized as the Best Private Investigator in Detroit by Expertise.

Client-Centric Approach

Tailored solutions to meet the unique needs of each client.

Innovative Techniques

Utilizing advanced surveillance and investigative technologies.

Trusted Investigative Services Since 1995

Unlock the Truth with ACS Investigations

With over two decades of expertise in surveillance, claims investigations, and criminal case exonerations, we bring clarity and justice to your cases. Contact us today for reliable and dedicated investigative services.

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