Aria, Emily, Hanna and Spencer, all make a move to block any messages on their phones from unwanted numbers - but it's not enough to stop "A," who quickly becomes more creative and dangerous.
Hanna gets word that her father is coming to Rosewood, bringing more than she bargained for with a new fiance, who has a daughter Hanna's age to boot. A date night between Aria and Fitz hits a rough patch when he questions her decision to leave her mother in the dark about her father's affair. The next night they reconcile, but when Aria returns home defiantly to finally spill the beans to her mother, she discovers her Ella sitting at the kitchen table holding a note from "A" revealing Byron's infidelity.
Emily is flustered upon learning that her new lab partner is none other than the mysterious Toby, Jenna's brother - but even more shocked to find the photo of she and Maya kissing from Noel's (Brant Daugherty) cabin party in her lab book - a move no doubt exacted by "A". Spencer is reeling from her stolen essay being submitted to a prestigious history award for students, but with no one to turn to with her family out town. Wren arrives at her home one night, as apologetic as he is drunk. When she takes him back to his motel, he plants a kiss on her that Hanna catches from afar in her car, just before she hears a stunning dedication from "A" on the radio. When the two girls return to Spencer's home, they find a message scrawled in lipstick on her vanity: "It won't be that easy." Whoever this person is, they love a challenge - and they're just getting started.
