Over 20 years after a tragic death, a group of friends' daughters face an unknown foe.
Tropes featured in this episode:
- Agony of the Feet: Karen's foot when a razor blade gets put in her pointe shoe, which she blames on Faran.
- Alpha Bitch: Karen Beasley is Millwood High's reigning queen of mean who bullies the Liars throughout the episode.
- Bait-and-Switch Comment: Madame Giry expresses concerns about Faran's high aspirations in ballet. Faran suspects it's because of her race, but Giry explains that she's concerned about Faran's medical history of scoliosis, especially that ABT may reject her for it.
- Detention Episode: The Liars end up in detention in the final parts of the episode where they meet each other and plot Karen's downfall together after being accused of things done to her that they didn't do to and collectively assuming that she set them up.
- Driven to Suicide: Angela Waters was distressed enough and asked help from Sydney Hayworth, which Davie Adams told her not to do, before she killed herself.
- Flashback: The episode begins with a flashback of the night Angela Waters killed herself.
- Good Girls Avoid Abortion: Played With. Imogen planned on raising her baby with the help of her mom. But after her death, when asked what she'll do now she has a panic attack and asks the school nurse how to get an abortion, now that her mom is dead and the baby's father won't help. The nurse is sympathetic but because Imogen is six-months pregnant she tells her, who knew abortion wasn't possible at the time but was feeling overwhelmed, to wait three months to give birth and then put the baby up for adoption.
- Interrupted Intimacy: Noa accidentally sees Sheriff Beasley getting oral sex from a young man in his car while she's doing community service.
- Slashed Throat: How the janitor dies at the hands of A when he walks in on their hideout.
