The team deal with a case of déjà-vu when survivors of a high school massacre are targeted by a new murderer with a similar killing style.
Hanna must explain when she is found with something she should not have; Mona tells Spencer's secret; Emily tries to help Hanna; Mike's friend gets the wrong impression of Aria; Shana appears in unusual places.
Pete's brother, Adam, brings their sick mother for a consultation; in the wake of her book's success, Violets walks in on Sheldon just as he's about to take her archenemy on a date.
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.
Jake thinks the graffiti case he's investigating is below him, until he discovers the culprit is the deputy commissioner's son. Gina's psychic friend gets under Charles's skin.