Michael Grant

A killer targets survivors of a high-school massacre, who have gathered for a reunion; Hotch fears that his son is being bullied.

Pete's brother (Kyle Secor) brings their mother (Louise Fletcher) in for a consultation; Violet catches Sheldon asking her archenemy for a date; Cooper treats a young music prodigy who has a brain tumor.

When Rocky starts making new friends and finds a new hobby CeCe fears their friendship is over; Flynn has his friend Henry join his karate class.

Hanna's attempt to protect her mom gets her into hot water with the police. Hanna has some explaining to do to her parents and the police after she's found with something she shouldn't have. Mona spills a secret of Spencer's to the other Liars … leading to hurt feelings amongst the group. Emily tries to help Hanna, only to have "A" turn the tables. And Aria helps out a friend of her brother Mike's (recurring guest star CODY ALLEN CHRISTIAN), who gets the wrong impression of her. Meanwhile, Shana (recurring guest star AERIEL MIRANDA) keeps popping up in the most unusual places, and Spencer's investigation into who was on the other end of Ali's mysterious phone number leads her and Toby (recurring guest star KEEGAN ALLEN) to the town of Ravenswood - which is unlike any place they've ever seen.