Pretty Little Liars: Original Sin - Season 1

First aired: 7/28/2022 10 episodes

In 1999, tragic events threatened to rip apart a close-knit circle of friends and the small town of Millwood. Twenty years later, a new group of Millwood High students is hunted by an assailant known as "A," who threatens to make them pay for their parents' past transgressions and sins of their own.

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Episodes

1. Chapter One: Spirit Week

Aired: 7/28/2022

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.

2. Chapter Two: The Spirit Queen

Aired: 7/28/2022

As Imogen and her newfound friends plot revenge against a mutual nemesis, Karen and her twin sister Kelly hatch an insidious plan of their own.

3. Chapter Three: Aftermath

Aired: 7/28/2022

In the wake of Spirit Week, Imogen unearths long-buried truths on her path to unmask the mysterious “A.” After Sheriff Beasley closes in, Noa, Faran, and Mouse weigh their options, while Tabby works to recover vital evidence.

4. Chapter Four: The (Fe)male Gaze

Aired: 8/4/2022

After their punishment comes to an end, the girls cement their friendship when Imogen needs them most.

5. Chapter Five: The Night He Came Home

Aired: 8/4/2022

Desperate to keep her mother’s house, Imogen throws a Halloween party to raise cash.

6. Chapter Six: Scars

Aired: 8/11/2022

As Imogen and Tabby dig into the mystery surrounding Angela Waters, Faran deals with the scars of her past. After Shawn confronts Marjorie, Noa questions her relationship with her mother, while Mouse spots a familiar face on her first date.

7. Chapter Seven: Carnival of Souls

Aired: 8/11/2022

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.

8. Chapter Eight: Bad Blood

Aired: 8/18/2022

The friends work together to uncover Imogen and Tabby’s assailant during the Annual Thanksgiving Millwood High Blood Drive. Later, Sidney confronts Tabby about her secrets.

9. Chapter Nine: Dead and Buried

Aired: 8/18/2022

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

10. Chapter Ten: Final Girls

Aired: 8/18/2022

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.