Pretty Little Liars: Original Sin

Six months after "The Millwood Massacre," the girls eagerly await a verdict in A's trial – as well as a much-needed break – until a failed exam condemns them to a fate worse than death: summer school. While working through their traumas in group therapy sessions with Dr. Sullivan, Mouse investigates a spooky online legend, Imogen copes with fears over her baby's safety, and Kelly becomes an active member of a cult-like youth group.

Haunted by increasingly disturbing hallucinations, Imogen attempts to forge a new identity outside of Millwood. As summer kicks off, Noa reconnects with an old friend, Tabby meets her movie-buff match, Faran gets a job as Millwood Community Pool's only female lifeguard, and Mouse is threatened by an unknown entity.

When their identities are revealed online, the PLLs scramble to figure out who is behind a series of anonymous calls – and keep Mouse's surprise birthday party under wraps. As the night of the party nears, Tabby uncovers an unsettling secret in Christian's basement, Imogen calls out her new coworker, Noa clashes with Jen, and Faran finally spills her secret.

Still shaken from her encounter with Bloody Rose, Mouse searches for the real Rose Waters. Meanwhile, Imogen keeps tabs on Dr. Sullivan, Tabby works on a new short, Noa takes a much-needed day off, and Faran's strength is put to the ultimate test.

After a disturbing discovery, the PLLs start to question Dr. Sullivan's intentions. While Tabby and Christian get ready to host a movie marathon, Faran loses faith in Henry, Mouse frets over her Lola's obsession with Spookyspaghetti.com, Imogen reconnects with her dad, and a torn Noa must choose between Jen and Shawn.

After discovering that Kelly's church is using her former home for their disturbing "Hell House," Imogen springs into action, while Mouse and Ash plan a Pride pool party in protest. Later, the PLLs' plan to freak out the faithful takes a frightening turn.