Jon Wellner

Jon Wellner (born July 11, 1975) is an American actor, best known for his role as toxicologist Henry Andrews on CSI: Crime Scene Investigation. He has portrayed Andrews from 2004 through to the 2015 season, his 11th with the show.

He 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.

Filmography Show Character Year Notes Becker Graduate #2 2001 2 episodes Gilmore Girls Mikey 2001 Brown Eyed Girl Baxter 2001 Video Short The King Of Queens Keith 2001 UncreditedSurviving Gilligan's IslandBob Denver2001TV movie Providence Van Buyer 2002 The Court Hoots 2002 Walkin' Free Johnny No Bones 2002 Video Short The 24 Year-Old Virgin Dale 2003 Video Short Yes, Dear Man 2003 CSI: Crime Scene Investigation Sam Tracy 2004 1 Episode - Unbearable CSI: Crime Scene Investigation Henry Andrews 2004–2015 (114 episodes) Judging Amy Alan Schein 2005 NCIS Simon Frankel 2005 1 episode - Red Cell Life on a Stick Kenny 2005 That's So Raven Brad 2005 1 Episode - Food for Thought Twenty Questions Pierce Lowell 2006 Courting Alex Reporter 2006 Grad Night Brett Johnson 2006 Vanished Agent 2006 What News? Tom Thompson 2007 Evan Almighty Staffer 2007 Ocean's Thirteen Bellman 2007 Thieves Harvey Reese 2007 Bones Mike Campbell 2008 1 Episode - The Con Man in the Meth Lab Dude, Where's My Bar? Monty the Mole 2009 Video Short Drop Dead Diva Calvin 2011 1 Episode - Mother's Day Major Crimes Attorney 2012 1 Episode - The Shame Game Shameless Charles 2021 1 Episode - Survivors