‘Pretty Little Liars’ Renewed for Fourth Season by ABC Family October 4, 2012 News, Pretty Little Liars The popular ABC Family teen soap opera Pretty Little Liars has been given a renewal order for a fourth season that will consist of 24 one-hour episodes. Ranked as cable TV’s number 1 series of this summer as well as the network’s number 1 series of all time, ‘Pretty Little Liars’ consistently scored well in key demo areas, including overall viewers and females between 12 to 34 years of age. Additionally, the August 28 finale broke records across the social media site Twitter, generating more than 709,000 tweets, peaking at an impressive 36,000 tweets per minute. As a refresher, ‘Pretty Little Liars’ focuses on four teenagers in Rosewood, Pennsylvania, who join together against an anonymous foe who threatens to reveal their darkest secrets while they attempt to unravel the mystery of the murder of their best friend. The series stars Lucy Hale, Troian Bellisario, Shay Mitchell and Ashley Benson in the lead roles with Keegan Allen, Tyler Blackburn, Holly Marie Combs, Ian Harding, Laura Leighton, Chad Lowe, Janel Parrish and Sasha Pieterse filling out other key roles in the series. Just like last season, a special Halloween episode of ‘Pretty Little Liars’ will air on Tuesday, October 23 at 8/7c, as part of ABC Family’s “13 Nights of Halloween” programming event. In that episode entitled “This Is a Dark Ride”, the four girls – Aria, Emily, Hanna and Spencer – are looking forward to some good old Halloween fun now that the traumatic events with Nate are behind them. But once aboard the Rosewood Ghost Train, the girls are in for much more than just some childish trick or treats. With “A” running amuck and unexpected party-goers popping up at every turn, this Halloween event becomes one killer party. The remainder of the current season of ‘Pretty Little Liars’ will return to ABC Family this coming January with the newly announced fourth season being anticipated for next summer.