TV highlights: 'Pretty Little Liars' finale promises even more questions

FINALE WATCH: On the fourth-season summer finale of "Pretty Little Liars" (ABC Family at 8 p.m.), ABC Family promises that the girls will make a discovery that proves everything they know about the evil "A" could be wrong -- which is great, given that the show's crazy plotlines make so much sense already. Plus, a look at the new, mysterious town of Ravenswood, the location of the spinoff that will debut in October.