[s3e1] It Happened 'that Night' -

The episode begins with the Liars attempting to move on during their summer break:

has been taking cooking classes with Caleb and visiting Mona Vanderwaal in the Radley Sanitarium—a secret she initially keeps from her friends. "That Night" Incident [S3E1] It Happened 'That Night'

The central plot revolves around a late-night sleepover at Spencer's house. During the night, a heavily intoxicated Emily disappears. The other girls find her standing over , holding a shovel. They realize that someone has dug up Alison's body and stolen her remains. The episode begins with the Liars attempting to