Hansen is a graduate of Cleveland State University, where he earned a B.A. (Mathematics) in 1971 and a M.S. (Mathematics) in 1973. Following graduation, Hansen taught mathematics to junior high school students for ten years in the Cleveland Municipal School District.
In 1980, Hansen obtained a Juris Doctorate from the Cleveland Marshall College of Law.
Hansen became an author in 2006 with the release of his debut thriller, Night Laws.
Series:
* Bryson Coventry Mystery
* Trane Ravenwood

