Plot summary
With "A" back with a vengeance, it leads the Liars to the conclusion that Shana was not the real "A". With the town of Rosewood trying to get back to normal, the Liars — especially Ali — are far from okay after the latest "accident". Alison starts to reconsider her decision about coming home and the possibility of leaving for good, but Aria, Emily, Hanna, and Spencer are determined to keep her safe and to figure out who and what is behind this latest incident. Meanwhile, Caleb also starts second-guessing his return, and Ezra dives into his research about Bethany Young — the girl in Ali's grave — to help find answers that will help the Liars.
The issues between Spencer's parents finally end when one of them is forced to leave home for good, leaving Spencer in an uncomfortable situation. A connection between Bethany and Mrs. DiLaurentis links to Radley so the Liars begin their next plan as Aria volunteers to work there in order to get further information. 'A' sends Alison a text message, saying "I buried your mom the same way I watched her bury you". Towards the climax of the episode, 'A' attacks Alison in her house and chokes her, almost killing her.
They fight until Emily comes and saves Alison. After 'A's attempt to strangle Alison, she gets a text message, "See how easy it is for me to kill you? If you leave Rosewood, I will. -A". ' A' ending: 'A' dressed as Black Widow sends flowers and a condolences card to Bethany Young's parents.
Credits
Adapted from Wikipedia contributors, Pretty Little Liars season 5. HTML formatting and reference markers removed.