Pretty Little Liars: A Timeline of the Night Ali Disappears

"The Jenna Thing" happens, and an intricate cover-up/extortion plot unfolds.

• We first meet Vivian Darkbloom, Ali's alter ego.
• Alison also meets and seduces an unaware Ezra, convincing him she's a lit-geek like him. Oh . . . and that she's not a teenager.
• Alison visits her grandmother and makes contact with Carla Grunwald. It's unclear if that was the first time or not.
• Ali is also involved with "beach hottie."