Jessica Tuck, born on February 19, 1963, in New York City, is an American actress best known for her performances on television as Megan Gordon Harrison on the ABC soap opera "One Life to Live," Gillian Gray in the CBS drama series "Judging Amy," and as Nan Flanagan on the HBO series "True Blood."

She graduated from Yale University with a BS in Psychology in 1986. Jessica is married to Robert Koseff, and they have a daughter, Samara Barnes Hallam Koseff.

Jessica Tuck made her television debut as Megan Gordon Harrison on "One Life to Live" from 1988 to 1992, earning a Daytime Emmy Award nomination for Outstanding Lead Actress in a Drama Series in 1992.

She reprised the role in spirit form in 1993, 1999, 2004, and 2012. After leaving daytime television, Jessica played Nicole Brown Simpson in "The O.J. Simpson Story" (1995) and had a leading role in the Olsen twins' straight-to-video movie "Billboard Dad" (1998). From 1999 to 2005, she co-starred opposite Amy Brenneman in "Judging Amy" as Gillian Gray.

Her filmography includes notable films such as "Secretary" (2002) and "Super 8" (2011). She also appeared in "High School Musical 2," "High School Musical 3," and "Sharpay's Fabulous Adventure" as Darby Evans, the mother of Ryan and Sharpay.

In 2008, she was cast in "True Blood" as Nan Flanagan, a vampire who is the spokesperson and face of vampires for the American Vampire League. She appeared in the series from 2008 to 2011 and made a guest appearance in 2014.

Jessica Tuck has made over 50 guest appearances on television shows, including "Murder, She Wrote," "Seinfeld," "NYPD Blue," "CSI: Crime Scene Investigation," "Grey's Anatomy," "Boston Legal," "Castle," "Private Practice," "Revenge," "Drop Dead Diva," and "Scandal." She also had recurring roles on "Murder One," "Sunset Beach," "Saving Grace," "Days of Our Lives," "Grimm," and "Twisted."

In 2001, she founded Spark Off Rose, a storytelling event based in Los Angeles, and currently serves as its executive producer and director.