Born in New York City, Tuck graduated from Yale University with a degree in psychology. She started acting in college, appearing in student films throughout New York, while utilizing the free time she had to go on auditions. Although she never pursued a career in psychology, Tuck found her studies of the human brain to be helpful when delving into the psyche of a character for an acting role. After years of auditioning, Tuck's first regular gig came in 1989 when she was cast as Megan Gordon, a soap star prone to diva-like outbursts, on "One Life to Live." Although her character was killed off from the show in 1992, Tuck randomly returned as Gordon's spirit in various episodes over the course of the next 20 years. In addition to her work on "One Life to Live," Tuck also had a recurring role on NBC's "Days of Our Lives" (1965-) in 2010. Despite being primarily known as the actress that played Megan Gordon, Tuck continued to work regularly throughout the ensuing decades, appearing in guest spots on over three dozen television shows in the '90s alone. In 1999 she nabbed the key supporting role of Gillian Gray on "Judging Amy," which she played throughout the entirety of the show's six-season run. In addition to numerous TV credits, Tuck also had small roles in a variety of successful films, including the midlife crisis comedy "Wild Hogs" (2007), J.J. Abrams's Spielbergian epic "Super 8" (2011), and the two sequels to the "High School Musical" franchise. In 2008, she landed the role of Nan Flanagan on Alan Ball's vampire drama "True Blood." Although the part of the outspoken leader of the American Vampire League was only supposed to last a few episodes, by season four Tuck was bumped up to series regular. In 2012, Tuck landed a recurring part on NBC's supernatural drama "Grimm" (2011-17).