NEW EVIDENCE MAY BE THE NAIL IN THE COFFIN IN THE SEASON ONE FINALE OF "PRETTY LITTLE LIARS," MONDAY, MARCH 21ST AT 8:00 PM ET/PT ON ABC FAMILY

Finale Follows an All-Day "Pretty Little Liars" Marathon from 11:00 AM - 8:00 PM ET/PT

Burbank, CA (March 9, 2011) - The Pretty Little Liars decide to go to an unlikely source for help to put an end to "A's" game, in "For Whom The Bell Tolls," the Season One finale of ABC Family's hit original series, "Pretty Little Liars," premiering Monday, March 21st (8:00 - 9:00 PM ET/PT). Fans can track all of "A's" moves in an all-day marathon starting at 11:00 AM (ET/PT) and running up to the season finale at 8:00 PM (ET/PT).

Now that Aria, Emily, Hanna and Spencer are in possession of the information that Alison left them, the girls decide that it's time to finally put an end to "A" and the mystery surrounding their friend. But without certain proof that their hunch is right, how can the girls catch "A" in his/her own game? And with little more than a video and hazy memories of the night that Alison disappeared, the Liars may have to turn to an unlikely source of information to help them put a stop to "A" once and for all - or so they think.

"Pretty Little Liars" is produced by Alloy Entertainment in association with Warner Horizon Television and is executive produced by I. Marlene King, Oliver Goldstick and Leslie Morgenstein. The series stars Troian Bellisario, Ashley Benson, Holly Marie Combs, Lucy Hale, Ian Harding, Bianca Lawson, Laura Leighton, Chad Lowe, Shay Mitchell and Sasha Pieterse.

Part of the Disney/ABC Television Group, ABC Family is distributed in over 98 million homes. ABC Family features programming reflecting today's families, entertaining and connecting with adults through relevant stories about today's relationships, all told with diversity, passion, humor and heart. ABC Family's programming is a mix of network defining original series and original movies, quality acquired series and blockbuster theatricals. ABC Family is also the destination for annual Holiday events with "13 Nights of Halloween" and "25 Days of Christmas!" ABC Family. A New Kind of Family.