Jon Wellner

From Wikipedia, the free encyclopedia Jon Wellner is an American actor, best known for his role as toxicologist Henry Andrews on CSI: Crime Scene Investigation. He has portrayed Andrews for eight sea... From Wikipedia, the free encyclopedia Jon Wellner is an American actor, best known for his role as toxicologist Henry Andrews on CSI: Crime Scene Investigation. He has portrayed Andrews for eight seasons and has been signed for the 2013-2014 season, his ninth with the showHe began his affiliation with the show in Season 4 as a researcher, verifying that the information on the show was accurate.He had a role as a zookeeper in Season 5, then took on the role of Andrews. He continues to serve as a researcher for the show. In 2009 he and fellow cast member/researcher David Berman formed a company that does research for several other television forensics shows including Bones, CSI: Miami, and Drop Dead Diva.