15. Do Not Disturb

Complete story — includes the ending

Byron tells Aria that he and Ella are engaged, and Ella tells Aria that they were together the night Charlotte was murdered. Spencer has a lunch meeting for her mother's campaign team, but Yvonne shows up instead. Hanna and Caleb devise a plan to recreate the backup hard drive and plant it in a garbage bin, making it look like they have given up the security footage. Meanwhile, Emily has the surgery to remove some of her eggs and donates them. Sara visits Alison at school, making Alison realize that Sara and Charlotte were closer than she thought. Aria and Spencer look for evidence that Sara Harvey is behind the new threats by breaking into her hotel room. while there, they discover Sara is staying in what was Charlotte's Radley room. Aria goes investigating into the closet and when she doesn't return, Spencer goes after her and discovers a hole in the wall with a ladder leading down into darkness. ' Uber A' ending: 'Uber A' puts the hard drive into their laptop which plays a video of Caleb, saying that they can also change the rules and a virus is put onto the laptop.