Marg Helgenberger

Cast as Kevin Costner s wife in the thriller, Mr. Brooks

Starred opposite Dennis Quaid and Scarlett Johansson in the comedy In Good Company

Had featured role as the woman whose medical condition leads Julia Roberts to uncover the corporate wrongdoer in the hit film Erin Brockovich

Portrayed Patsy Ramsey in CBS miniseries about the killing of Jon Benet Ramsey, Perfect Murder, Perfect Town ; second TV project with Ann-Margret

Returned to series television as Catherine Willows in the CBS drama CSI: Crime Scene Investigation ; earned Golden Globe (2002) and Emmy (2003) nominations

Starred opposite Ann-Margret in Showtime s Happy Face Murders

Was outstanding as Steven Weber s irate sister in Showtime s magnificent miniseries about the elusive Gulf War Syndrome, Thanks of a Grateful Nation (Showtime)

Portrayed sex-starved widow to David Caruso s small-time crook in the intelligent, well-acted TV-movie Elmore Leonard s Gold Coast (Showtime), directed by Weller

Starred as Steven Sagal s love interest in typical actioner, Fire Down Below

Turned in terrific performance as Pia Postman, the shallow, vain, heavily made-up talk show host of Murder Live! , an NBC movie directed by Roger Spottiswoode

Appeared as James Garner s book editor in My Fellow Americans

Played recurring role as a woman involved with George Clooney s Dr. Doug Ross on ER

Had small role (blink and you miss her) as a bitchy fed (in a push-up bra, no less) in Michael Bay s Bad Boys

Portrayed molecular biologist Laura Baker in Species ; would later reprise Dr. Baker in sequel bomb, Species II (1998)

First collaboration with director Peter Weller, Partners , a presentation of Showtime s Directed By series; Weller also acted

Provided pointless and distracting love interest for Woody Harrelson in The Cowboy Way

Acted opposite Bruno Kirby in I ll Be Waiting , a segment of Showtime s Fallen Angels directed by Tom Hanks

Portrayed a novelist living in a haunted forest in ABC miniseries, Stephen King s The Tommyknockers ; fared better as the desirable and ambitious Debbie who seduces Gary Cole to murder for her in the CBS miniseries When Love Kills : The Seduction of John Hearn

Essayed the lusty Mickey who befriends Anita (Lesley Ann Warren) but sleeps with her husband (Tom Skerritt) in In Sickness and in Health (CBS)

Acted in the unjustly over-looked feature Crooked Hearts

First leading role in a TV-movie, Death Dreams (Lifetime), as a woman whose near-death experience triggers some peculiar visions

Narrated PBS historical documentary, Not on the Frontline , about women who served in the Vietnam War

TV-movie debut, Blind Vengeance (USA Network)

Made feature film debut in one segment of the horror anthology After Midnight

Played K C Koloski, a heroin-addicted hooker, on the ABC war drama series China Beach ; won Emmy Award

First TV series as a regular, the short-lived CBS comedy-drama, Shell Game ; played Natalie Thayer

Earliest primetime TV appearances included a guest spot on the detective series Spenser: For Hire (ABC)

Played the role of spunky rookie cop Siobhan Ryan on the ABC daytime drama Ryan s Hope

Grew up in North Bend, Nebraska; worked part-time in a meat packing plant while a teenager