To protect Emily, the girls decide not to go to the police. Instead, Spencer helps create an elaborate alibi to hide their involvement at the cemetery.
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'
: Spencer's relationship with Toby is strained as she struggles with the weight of the new secrets, and Hanna's loyalty to Mona creates friction within the group. To protect Emily, the girls decide not to go to the police
has been volunteering in Haiti but is struggling the most, dealing with the trauma of Maya's death through excessive drinking. Aria Montgomery has taken up photography classes. "That Night" Incident : Spencer's relationship with Toby
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 move on during their summer break:
: Spencer begins receiving mysterious calls from Garrett, who is in jail for Alison's murder and wants her mother to represent him in court.