Which actor played lab technician Henry Andrews on CSI?

Jon Wellner played lab technician Henry Andrews on CSI: Crime Scene Investigation. Andrews worked in the Las Vegas crime lab, specializing in DNA and toxicology, and became one of the show’s familiar recurring technicians.

Wellner’s connection to CSI began behind the scenes. He first worked as a researcher, helping verify the forensic information used in episodes. He made an early on-screen appearance as a zookeeper in Season 5 before taking on the role of Henry Andrews, who first appeared in the episode “Iced.”

Wellner eventually appeared in more than 100 episodes and remained with the series through its 2015 finale, “Immortality.” Henry was promoted to the main cast in Season 13, reflecting how the show increasingly broadened its focus beyond the senior investigators and included more of the laboratory staff.

A common mix-up is David Berman, who played assistant medical examiner David Phillips, and Wallace Langham, who played trace technician David Hodges. Archie Kao played lab technician Archie Johnson, another recurring specialist. Wellner also continued CSI’s tradition of combining acting with technical research: in 2009, he and Berman formed a research company serving several forensic television productions.