When their best friend Alison mysteriously vanishes, four girls believe their secrets are safe forever. But when they begin to receive threatening messages from someone named "A," the truth may be only one text away. Filled with mystery, scandal, intrigue and nail-biting suspense, PRETTY LITTLE LIARS is based on the best-selling book series for young adults from Alloy.
Set one year after the disappearance of Alison, the manipulative and vindictive queen bee, the one-hour drama revolves around four 16-year-old girlfriends -Aria, Hanna, Spencer and Emily - who have lost touch with one another until each begins to receive mysterious messages suggesting that Alison is watching them and knows their most private details they are desperate to keep hidden. Suddenly, living in their picturesque suburban community is far from perfect as secrets, lies and betrayals threaten everything they hold dear. Even after Alison's body is discovered, the messages don't stop...
Spencer is a perfectionist and straight-A student whose pressure to stand out in her overachieving family leaves her feeling alone...until she finds understanding in the unlikeliest of places - the arms of her sister's fiance.
Troian Bellisario stars in the one-hour drama Pretty Little Liars, based upon the popular book series from Alloy Entertainment, as Spencer Hastings, a straight-A student and overachiever.
Bellisario previously had a recurring role on the television series NCIS and guest starring parts on First Monday, JAG and Quantum Leap, among others. She was seen in the theatrical motion picture Last Rites, as well as the independent films Peep World, Consent and Billboard Dad. On stage, she appeared in Farragut North and Equivocation at the Geffen Playhouse in Los Angeles. With The Casitas Group, a theatre company of which she is a founding member, Bellisario appeared in an exclusive engagement of Martin McDonagh's The Pillowman, as well as a Sam Shepard double feature: Fool for Love and True West. She has also performed in university theatre productions of Rosencrantz and Guildenstern are Dead, The Suicide, All's Well That Ends Well and Machinal.
Bellisario lives in Los Angeles, where she graduated from the University of Southern California's School of Theatre, earning a bachelor of fine arts in acting. She enjoys dance, writing and playing the guitar.