In 1999, Angela tries to get attention at a party.

She is ignored and jumps to her death.

In the present, Karen shows up at Imogen's. She wants to pick up her stuff because they had a falling out over a boy.

Davie is given a flyer from 1999 that was taped to the door.

As the girls argue, they realize there's water everywhere and find Davie dead with her wrists slit and A on the bathtub.

A month later, Imogen is staying with Tabby, and things take a turn when they realize their parents were friends.

Noa attends community service and finds the sheriff receiving oral sex from someone else who should be doing community service.

Karen is horrible to Imogen, calling her a slut and telling her she should not be at the school.

Somehow, all of the liars wind up in detention and they realize it was Karen. Imogen thinks they should kill Karen.