Aria Montgomery is back in Rosewood after being in Iceland for a year. It might as well have been a lifetime because Aria suddenly feels like an outsider in her hometown. She's reconnecting with her old friends, but only time will tell if their secrets will bond them together or tear them apart. Luckily, Aria has a great relationship with her mom, but even her near-perfect family has its secrets. Aria has one of her own that's too dangerous to share with anyone – so how can it be that "A" is already on to her?