Don is a retired Detective-Sergeant from the San Francisco Bay Area City of Vallejo California.  Don worked crimes against persons, developing a specialty in homicide and suspicious death investigation and is recognized as a subject matter expert by California POST.  Don served on the Hostage Negotiations Team, Field Training Unit and the Solano County CA Sex Offender Task Force and the Officer Involved Fatal Incident Investigation Team.

 

After retirement, Don relocated to Connecticut where he joined Quinnipiac University as the Director of Investigations for the Public Safety Department.  Don serves on the University's Threat Assessment Team and now holds the rank of Captain.

 

In 2011, Don established Madison Investigative Services, LLC. Over the years, Don has assisted clients with a wide range of investigative needs. Some of these areas include highly sensitive family matters, workplace investigations, wrongful death cases, fatal accident investigations, missing persons and allegations of abuse and neglect involving individuals with developmental disabilities.

 

Don was featured as the Investigative Consultant for the HBO series Murder on Middle Beach (2020) and is currently working on a new project involving the Zodiac Serial Killer soon to be released (2024).

 

Don served honorably in the U.S. Marine Corps, Military Police and holds a Bachelor's degree in Management from Saint Mary's College of California and a Master's degree in Organizational Leadership from Quinnipiac University.