Marg Helgenberger Autographs
Mary Margaret "Marg" Helgenberger (born November 16, 1958) is an American actress. She began her career in the early 1980s and first came to attention for playing the role of Siobhan Ryan on the daytime soap opera Ryan's Hope from 1982 to 1986. She is best known for her role as Catherine Willows in the CBS police procedural drama CSI: Crime Scene Investigation (2000–13), the subsequent television film Immortality (2015), and the second and third seasons of the sequel series CSI: Vegas (2022–2024). Helgenberger is also known for playing the role of K.C. Koloski in the ABC drama China Beach (1988–91), which earned her the 1990 Emmy Award for Outstanding Supporting Actress in a Drama Series. She is also known for roles in the TV series Under the Dome and Intelligence, and the films Species (1995), Species II (1998), Erin Brockovich (2000), and Mr. Brooks (2007).
Helgenberger was born November 16, 1958, in Fremont, Nebraska, to Mary Kay (née Bolte), a nurse, and Hugh Helgenberger, a meat inspector. She has an older sister Ann and a younger brother Curt.\nThey are of Irish and German descent and had a Roman Catholic upbringing. They were raised in North Bend, Nebraska. She graduated from North Bend Central High School, where she played the French horn in its marching band.
Until college, Helgenberger aspired to be a nurse like her mother. She attended Kearney State College (now the University of Nebraska at Kearney) in Kearney, Nebraska, then Northwestern University's School of Speech (now the School of Communication) in Evanston, Illinois, earning a B.S. degree in speech and drama.
Read more about Marg Helgenberger on Wikipedia
Affiliate disclosure: When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Current items with a signature of Marg Helgenberger
These are the most current items with a signature of Marg Helgenberger that were listed on eBay and on other online stores - click here for more items.
| Picture | Item Title | Price | Store |
 | Marg Helgenberger AUTOGRAPHED Signed 8x10 Photo CSI Promo | $70.00 |  |
| Marg Helgenberger AUTOGRAPHED Signed 8x10 Photo CSI Promo | $70.00 | |
| Marg Helgenberger AUTOGRAPHED Signed 8x10 Photo CSI Promo | $70.00 | |
Traded items with a signature of Marg Helgenberger
The most expensive item with a signature of Marg Helgenberger (Marg Helgenberger Signed Autograph CSI Crime Scene Investigation Pilot Script) was sold in June 2025 for $299.99 while the cheapest item (MARG HELGENBERGER autograph HAND SIGNED 5408) found a new owner for $1.36 in July 2017. The month with the most items sold (5) was September 2020 with an average selling price of $20.00 for an autographed item of Marg Helgenberger. Sold items reached their highest average selling price in June 2025 with $299.99 and the month that saw the lowest prices with $2.81 was July 2017. In average, an autographed item from Marg Helgenberger is worth $23.99.
Most recently, these items with a signature of Marg Helgenberger were sold on eBay - click here for more items.
Latest News about Marg Helgenberger
After Joining CSI: Vegas, Marg Helgenberger Reveals Why They Needed A Safety Mee (10/21/2022): Marg Helgenberger is back as Catherine Willows on CSI: Vegas, but there was a safety meeting on set for one particular reason. 
Marg Helgenberger Talks About Why She Left CSI Originally And Getting Used To Th (09/12/2022): Ahead of CSI: Vegas' Season 2 premiere, Marg Helgenberger discusses why she initially left CSI and how it's been like getting back into the swing of things. First Look At CSI: Vegas' Marg Helgenberger's Return To CBS Franchise (09/01/2022): With CSI: Vegas' season premiere soon, CBS has released a first look at Marg Helgenberger's return to the long-running franchise! CSI: Vegas Star On Bringing The 'Very Talented' Marg Helgenberger Back For Seaso (04/07/2022): Marg Helgenberger will be back as Catherine Willows for CSI: Vegas Season 2, and one star is already excited about it. How Much CSI: Vegas Will Feature Marg Helgenberger's Catherine After Losing Will (02/12/2022): CSI: Vegas already lost William Petersen and Jorja Fox, but now Marg Helgenberger is coming back as Catherine.
