ABC Family has picked up one of its top series, Pretty Little Liars, for a third season, which is slated to launch next summer. The size of the order is a whopping 24 episodes, which rivals those for broadcast drama series. It matches the mystery series’ sophomore-season order, which was consequently upped to 25 episodes with a Halloween special that aired last month. Pretty Little Liars, from Warner Horizon and Alloy, returns for the second part of its second season on Monday, January 2. The series, which broke ABC Family ratings records in several young demos when it premiered last year, has become one of the network’s top three shows, or as ABC Family’s president Michael Riley calls them, ABC Family’s “triple-threat”: Switched At Birth, The Secret Life Of The American Teenager and Pretty Little Liars.