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.
Release Date
PremieredPretty Little Liars: Original Sin Season 1 released on July 28, 2022.
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Sign In to Track ProgressSeasons
Chapter One: Spirit Week
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.
Chapter Two: The Spirit Queen
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.
Chapter Three: Aftermath
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.
Chapter Four: The (Fe)male Gaze
After their punishment comes to an end, the girls cement their friendship when Imogen needs them most. Meanwhile, Noa finds herself in A's crosshairs.
Chapter Five: The Night He Came Home
Desperate to keep her mother’s house, Imogen throws a Halloween party to raise cash – but the presence of an unwanted guest casts a shadow over the celebrations.
Chapter Six: Scars
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.
Chapter Seven: Carnival of Souls
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.
Chapter Eight: Bad Blood
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.
Chapter Nine: Dead and Buried
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.
Chapter Ten: Final Girls
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.
Latest Trailers and Teasers
Season 2 Mid-Season Trailer
Summer School Weeks Ahead Trailer
Pretty Little Liars: Original Sin
Season 1
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.
Release Date
PremieredPretty Little Liars: Original Sin Season 1 released on July 28, 2022.
Your Progress
Track your watching progress by signing in
Sign In to Track ProgressChapter One: Spirit Week
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.
Chapter Two: The Spirit Queen
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.
Chapter Three: Aftermath
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.
Chapter Four: The (Fe)male Gaze
After their punishment comes to an end, the girls cement their friendship when Imogen needs them most. Meanwhile, Noa finds herself in A's crosshairs.
Chapter Five: The Night He Came Home
Desperate to keep her mother’s house, Imogen throws a Halloween party to raise cash – but the presence of an unwanted guest casts a shadow over the celebrations.
Chapter Six: Scars
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.
Chapter Seven: Carnival of Souls
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.
Chapter Eight: Bad Blood
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.
Chapter Nine: Dead and Buried
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.
Chapter Ten: Final Girls
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.