Studied sociology, psychology and criminology in college
Her blog on the CBS Web site chronicles her experiences acting in NCIS
Known for her Goth look
She performed in a band, Lo-Ball, and also recorded a song, "Fear," which aired on a 2010 NCIS episode and was included on the show's sound track
Appeared in "The Unnamed Feeling" Metallica music video
Her music career led to a friendship with Randy Jackson, whose American Idol competes for viewers with NCIS
Supports gay rights, civil rights, the American Red Cross and animal rights; backs a rescue organization for abandoned and abused dogs
Her interest in battling crime extends beyond her forensic-scientist role on NCIS, as she once appeared on America's Most Wanted in efforts to solve a 2007 murder