When the girls and Mona return to town, per the Court of Pennsylvania and Alison's request, they must face the demons they left behind so many years ago, and the woman behind them: Charlotte DiLaurentis.

Reunited in Rosewood, Alison's first request of the girls is to lie to get Charlotte released, begging for them to let her have the family she always wanted. Faced with difficult decisions, each of the girls must look inside themselves and choose to either help their friend or protect themselves. Ultimately, only Aria stands against Alison's request, and Charlotte is released.

Again, the girls suffer the consequences of lying, as Charlotte is released and heads home with Alison. While catching up and getting tipsy at the new Rosewood hotel, The Radley, Charlotte is found dead outside of the Rosewood Church, a suspected suicide. 

The news hits the girls hard, because their actions led to Charlotte getting released, only for her to take her life. But nothing is that simple in Rosewood: the coroner's report ruled that she was already dead before being tossed from the bell tower. Now, the girls are the main suspects in her murder, and it's a free-for-all in the search for yet another murderer in Rosewood.

Meanwhile, Sara Harvey's mysterious return shakes the Pretty Little Liars and Mona.