Pretty Little Liars: Original Sin

In 1999, a group of friends is rocked by the sudden death of one of their own. Twenty-two years later, their daughters are pushed together by a mysterious foe.

Imogen and her new friends plot revenge on their common nemesis, while Karen and her twin sister Kelly hatch plans of their own.

As Millwood deals with the aftermath of recent events, Imogen uncovers secrets to unmask "A." Beasley gets closer to the truth, Noa weighs her options, and Tabby tries to retrieve some evidence.

After their punishment comes to an end, the girls cement their friendship when Imogen needs them most. Meanwhile, Noa find herself in A's cross hairs.

Desperate to keep her mother's house, Imogen throws a Halloween party to raise cash. Unfortunately, the presence of an unwanted house guest casts a shadow over the celebrations.

As Imogen and Tabby dig into the mystery surrounding Angela Waters, Faran deals with the scars of her past.

As the Millwood carnival approaches, Mouse and Tabby each struggle with secrets, and Noa notices Shawn isn't himself. Meanwhile, Imogen considers her baby's future, and Faran confronts everything that's been plaguing her.

The friends attempt to get to the bottom of one mystery, while Imogen pursues answers to another. Then, a much needed girls' night prompts Sidney to confront her daughter about a long-held secret

Despite coming clean about 'A,' the friends find their troubles far from over, especially as the results of the group's clandestine blood drive push Tabby towards a new suspect.

As "A" doubles down, the friends must work quickly to uncover the link between Angela Waters' death, their mothers, and their mysterious foe - before it's too late.

The girls are facing a fate worse than death, summer school; Millwood High isn't the only thing killing the buzz, there's a new horror villain in town.

Heeding Dr. Sullivan's advice, the PLLs make the most of their summers. Meanwhile, Imogen forges a new identity away from her closest friends.

The identities of the PLLs are leaked online and the girls rush to find out who is behind the anonymous calls as they keep Mouse's surprise party under wraps; the night of the party is near and Tabby uncovers a disturbing secret.

Still shaken after her encounter with Bloody Rose, Mouse searches for the real Rose Waters while Imogen monitors Dr. Sullivan, Tabby works on a new project, Noa takes a break, and Faran faces an ultimate test.

A disturbing discovery makes the PLLs doubt Dr. Sullivan. Meanwhile, during Tabby's movie marathon, Noa is forced to make a brutal decision.

After discovering that Kelly's church is using her former home, Imogen springs into action, while Mouse and Ash plan a Pride pool party in protest.

Following an attack at Hell House, Tabby leads the charge in uncovering Bloody Rose's identity.

The PLLs take a final stab at their list of suspects, and through a harrowing night will discover the identity of Bloody Rose Waters once and for all.