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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.[1]

Key Information

He began his affiliation with the show in season 4 as a researcher, verifying that the information on the show was accurate.[2] 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.[3]

Filmography

[edit]
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 Uncredited
Surviving Gilligan's Island Bob Denver 2001 TV 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

References

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Jon Wellner

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Jon Wellner (born July 11, 1975) is an American actor best known for his recurring role as lab technician and toxicologist Henry Andrews on the CBS crime drama series CSI: Crime Scene Investigation from 2005 to 2015.[1]

Early life and education

Childhood and family

Jon Wellner was born on July 11, 1975, in Evanston, Illinois.[1] He grew up in Illinois with his family, spending his early years in the state.[2] As a child, Wellner developed an interest in performing arts through involvement in local theater productions and community activities.[2] These experiences provided his initial exposure to acting and set the stage for later formal training.[2]

College years and move to Los Angeles

Wellner attended New Trier High School in Winnetka, Illinois, from 1989 to 1993.[3] He then attended Columbia College Chicago from 1994 to 1997, where he studied theater and television, ultimately earning a Bachelor of Arts degree in Television.[3][4] His education provided foundational skills in media production and performance, which he later applied to his work in the entertainment industry.[5] Following his graduation, Wellner relocated to Los Angeles in 2000 to pursue a career in acting, with an initial focus on stand-up comedy, sketch, and improv.[6] He was motivated by the constrained opportunities in Chicago, where he had already exhausted local theater and improv scenes after completing a few plays, prompting him to seek broader prospects in the heart of the film and television industry.[4] This move in the early 2000s marked a pivotal step toward professional opportunities in a highly competitive environment.[6]

Acting career

Early roles and television debut

Wellner made his television debut in 2001, appearing as Graduate #2 in the "Becker" episode "2001 1/2: A Graduation Odyssey," which aired on February 19.[7] Later that year, he starred as Bob Denver/Gilligan in the TV movie Surviving Gilligan's Island: The Incredibly True Story of the Longest Three Hour Tour in History, which aired on October 14.[8] These roles marked his entry into professional acting following his studies in Television at Columbia College Chicago and relocation to Los Angeles. Earlier in 2001, he guest-starred as Mikey, a supporting character in the season 1 finale of "Gilmore Girls" titled "Love, Daisies and Troubadours," broadcast on May 10. He followed this with another small part as Keith in the "The King of Queens" episode "Life Sentence," which aired on November 12.[9] These early appearances were in supporting roles in comedies. In 2002, Wellner continued building his resume with a guest spot as Harvey Reese in the "Thieves" episode "Home Is Where the Heist Is," aired on September 21 as part of the short-lived ABC series.[10] Additional minor roles in early 2000s shows like "Yes, Dear" and "Judging Amy" further established his presence in supporting roles in ensemble comedies and dramas.[11]

Role on CSI: Crime Scene Investigation

Jon Wellner was cast as the lab technician and toxicologist Henry Andrews on CSI: Crime Scene Investigation following a guest appearance as Sam Tracy in the show's fifth season episode "Unbearable," marking his transition to a recurring role starting with the episode "Iced," which aired on May 19, 2005.[12][4] In this initial capacity, Andrews served as minor support in the Las Vegas Crime Lab, specializing in toxicology analysis to identify substances in forensic investigations, often displaying a neurotic and eager-to-please demeanor that reflected his youth and ambition to impress senior team members like Gil Grissom.[4] Over the seasons, Andrews' character arc evolved from peripheral lab assistance to a more integral team member, with his responsibilities expanding to include DNA analysis and audiovisual support by the later years, culminating in increased screen time and narrative involvement in episodes focused on the lab technicians, such as "Lab Rats" in season 7 and "You Kill Me" in season 8.[4] This development peaked in 2012 when Wellner was promoted to series regular for season 13, after appearing in over 50 episodes as a recurring character, allowing Andrews to feature more prominently in the ensemble through the series' 15th season and the 2015 finale movie CSI: Immortality.[13][14] Behind the scenes, Wellner contributed to the show's authenticity as a researcher since season 4, collaborating with medical examiner David Berman to verify forensic details, which he described as stressful due to the need for precision in a high-profile procedural.[4] This dual role not only shaped Andrews' accurate portrayal but also elevated Wellner's industry visibility, establishing him as a recognizable figure in television and marking a pivotal career milestone, as he noted feeling "blessed" by the opportunity after years of recurring work.[14] Fan reception was particularly positive for Andrews' quirky personality and the lab-centric storylines, with Wellner expressing appreciation for the loyal audience that supported the character's growth over a decade.[4][14]

Film appearances and later television work

Following his established role on CSI: Crime Scene Investigation, which provided a platform for broader opportunities, Jon Wellner expanded into feature films during the mid-2000s. In 2006, he appeared in the horror film Grad Night, directed by Quinn Wexler, portraying the character Brett Johnson, a high school student entangled in a night of escalating chaos at an amusement park.[15] This independent project marked one of his early forays into cinema, showcasing his ability to handle tense, ensemble-driven narratives outside the procedural genre. Wellner followed this with supporting roles in two high-profile comedies the next year: as the Bellman in Steven Soderbergh's Ocean's Thirteen, where he contributed to the ensemble heist storyline alongside George Clooney and Brad Pitt, and as a Staffer in Tom Shadyac's Evan Almighty, a family-oriented sequel featuring Steve Carell in the lead.[16][17] These appearances highlighted Wellner's versatility in brief but memorable parts within blockbuster productions. In television, Wellner's post-CSI guest roles demonstrated a diversification into other crime dramas and character-driven series, often playing professionals or quirky supporting figures. He appeared on NCIS in 2005 as Simon 'Urkel' Frankel, a tech-savvy informant, in the episode "Red Cell," which aired on April 26.[18] By 2008, he guest-starred on Bones as Mike Campbell, an eccentric inventor involved in a meth lab explosion case, adding a layer of inventive humor to the forensic investigation.[19] Wellner continued this trajectory in 2012 with a role as an Attorney on Major Crimes, appearing in the episode "The Shame Game" to navigate legal intricacies in a sensitive scandal plot. His television work peaked in 2021 with a guest spot on Shameless as Charles in the season 11 episode "Survivors," portraying a community figure amid the Gallagher family's chaotic dynamics. Wellner's career evolution after CSI emphasized selective guest appearances across genres, from comedies to gritty dramas, without pursuing lead roles or extensive independent projects. No voice work or additional films have been credited to him in recent years as of November 2025, suggesting a shift toward sporadic television engagements that leveraged his established on-screen reliability.[1]

Personal life

Marriage to Whitney Powell

Jon Wellner married actress Whitney Powell on April 26, 2008.[1] Both established themselves in the acting profession in Los Angeles during the mid-2000s, with Wellner gaining prominence through his recurring role on CSI: Crime Scene Investigation starting in 2004.[1] Powell, originally from the Chicago area, pursued television and film roles after relocating to Los Angeles, appearing in shows such as The Bill Engvall Show and Lie to Me.[20] Throughout their marriage, which spanned from 2008 to 2015, Wellner and Powell shared a professional life centered on acting opportunities in Hollywood.[21] Wellner continued his work on CSI until the series concluded in 2015, while Powell guest-starred in an episode of the same show in 2014, portraying the character Nancy. Their parallel careers in the industry highlighted a partnership built around mutual experiences in auditions, set work, and the challenges of sustaining acting livelihoods.[20]

Divorce proceedings

Jon Wellner filed for divorce from Whitney Wellner (née Powell) in March 2015, after seven years of marriage.[22][23] The proceedings involved significant disputes over spousal support, with Wellner arguing that his estranged wife should seek full-time employment outside of acting to mitigate support obligations, given her limited success in the industry.[22] Whitney Wellner countered by requesting emergency spousal support in October 2015, claiming she had been cut off from joint finances and credit cards following her loss of a low-wage job at a dog rescue organization.[24][23] Wellner opposed the request, citing a substantial income drop after the conclusion of CSI: Crime Scene Investigation in September 2015, which he stated limited his earnings to residuals and sporadic projects, despite her claims of his ongoing $114,000 in annual residuals and prior $20,000 per episode.[23] Their shared backgrounds as actors contributed to tensions, as Wellner disputed her assertion that he had helped secure her 2014 guest role on CSI.[23] The couple had no children together, and the divorce was finalized without further public details on the settlement terms.[21]

Filmography

Film roles

Wellner's early film roles included Baxter in the short Brown Eyed Girl (2001).[25] He appeared as Bob Denver in the 2001 made-for-television docudrama Surviving Gilligan's Island: The Incredibly True Story of the Longest Three Hour Tour in History, in a reenactment of the classic sitcom's production.[26] Other short films include Johnny No Bones in Walkin' Free (2002), Dale in The 24 Year-Old Virgin (2003), and Monty the Mole in Dude, Where's My Bar? (2009). In 2006, he played the supporting role of Brett Johnson in Grad Night, a low-budget comedy depicting a chaotic high school graduation party involving themes of youthful rebellion and excess. Wellner's profile rose with cameo appearances in two high-profile 2007 comedies: as the Bellman in Steven Soderbergh's ensemble heist film Ocean's Thirteen, where he contributed to the film's lighthearted casino intrigue, and as a Staffer in Evan Almighty, Tom Shadyac's family-oriented sequel featuring divine intervention and animal antics.[1] He also appeared as Harvey Reese in the 2007 pilot Thieves. These roles marked Wellner's transition to bigger productions, bolstered by his growing recognition from CSI: Crime Scene Investigation.[4]

Television roles

Wellner's television career began with two episodes of Becker as Graduate #2 in 2001.[7] He followed this with a guest appearance as Mikey on Gilmore Girls in 2001.[27] Subsequent roles included Van Buyer on Providence (2002), Hoots on The Court (2002), Man on Yes, Dear (2003), Keith on The King of Queens (2001, uncredited), Sam Tracy on CSI: Crime Scene Investigation (2004), Alan Schein on Judging Amy (2005), Kenny on Life on a Stick (2005), Pierce Lowell on Twenty Questions (2006), Reporter on Courting Alex (2006), Agent on Vanished (2006), and Tom Thompson on What News? (2007), often portraying nerdy or technical characters.[1] In 2005, he appeared as Brad on That's So Raven.[28] That same year, Wellner guest-starred as Simon "Urkel" Frankel on NCIS. From 2005 to 2015, he had a recurring role as lab technician Henry Andrews on CSI: Crime Scene Investigation, appearing in 114 episodes. In 2008, he played Mike Campbell, an inventor, on Bones. Wellner guest-starred as Calvin on Drop Dead Diva (2011) and as an attorney on Major Crimes in 2012.[29] He reprised Henry Andrews in the 2015 TV movie CSI: Immortality. His most recent television credit was as Charles on Shameless in 2021.

References

  1. A Conversation with Jon Wellner - Project Euclid
  2. ‪Jon A. Wellner‬ - ‪Google Scholar‬
  3. Jon A. Wellner
  4. Jon Wellner retires after 37 years at UW | Biostatistics
  5. Jon A. Wellner - University of Washington Department of Statistics
  6. Jon Wellner - The Mathematics Genealogy Project
  7. Dr. Jon Wellner presents at John Kinney Memorial Lecture
  8. Jon Wellner - IMDb
  9. Jon Wellner - Age, Family, Bio | Famous Birthdays
  10. Jon Wellner - Co-Founder and Co-President | LinkedIn
  11. Jon Wellner - CSI Files
  12. Acting and autopsies. 'CSI' regular really researches his role
  13. Jon Wellner Biography, Celebrity Facts and Awards - TV Guide
  14. "Becker" 2001 1/2: A Graduation Odyssey (TV Episode 2001) - IMDb
  15. "The King of Queens" Life Sentence (TV Episode 2001) - IMDb
  16. Jon Wellner Movies & TV Shows List | Rotten Tomatoes
  17. "Thieves" Home Is Where the Heist Is (TV Episode 2002) - IMDb
  18. Jon Wellner | TVSA
  19. CSI through the years — TIMELINE - Las vegas Review Journal NEON
  20. 'CSI's' Jon Wellner Promoted to Series Regular (Exclusive)
  21. Interview: Jon Wellner - CSI Files
  22. Grad Night (2006) - IMDb
  23. https://www.imdb.com/title/tt0496806/
  24. https://www.imdb.com/title/tt0413099/
  25. https://www.imdb.com/title/tt0364845/
  26. "Bones" The Con Man in the Meth Lab (TV Episode 2008) - IMDb
  27. Whitney Powell - IMDb
  28. https://www.naijanews.com/buzz/people/jon-wellner-biography-career-and-filmography/
  29. 'CSI' Star Jon Wellner Divorce -- My Wife Should Quit Acting And Get ...
  30. CSI star Jon Wellner 'tries to stop wife's emergency cash demand'
  31. 'CSI' Star Jon Wellner's Wife Is Flat Broke ... Needs Money ASAP in Divorce
  32. https://www.imdb.com/title/tt0286181/fullcredits
  33. Gilmore Girls - Jon Wellner as Mikey - IMDb
  34. "That's So Raven" Food for Thought (TV Episode 2005) - IMDb
  35. Jon Wellner as Attorney - The Shame Game - IMDb
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