ABC FAMILY SETS PREMIERE DATES FOR ITS HIT RETURNING SERIES INCLUDING THE ONE HOUR SCRIPTED DRAMA “PRETTY LITTLE LIARS” PREMIERING IN JANUARY 2013 In all-new episodes of ABC Family’s hit original series “Pretty Little Liars,” returning on, Tuesday, January 8th, 8:00PM – 9:00PM ET/PT, Radley Sanitarium has given Mona a