Claire says that if Sara gave you something, she in turn took two things away. After it is revealed during "Miss Me x 100" that Bethany Young is the person buried in Alison's grave, Charlotte sends Sara to gift Bethany's parents a card and flowers, while wearing her black veil disguise. In "Game On, Charles", a young blonde girl is seen throughout the episode in "A's" dollhouse wearing the infamous yellow top that Alison and Bethany were both buried in. The anonymous figure first appears drawing on the wall of her captivity room and later carries out "Big A's" orders in delivering the girls food. The Liars manage to escape and the police arrive at the scene to find the blonde girl in her room. A police officer approaches her to ask for her identity and she reveals her name to be Sara Harvey. The Liars recognize her since they previously chatted to Sara's friends. During "Songs of Innocence", Sara runs away from home to Emily's after her mom took her home from the hospital. Pam offers Sara to stay with the two for a while. Throughout the season, Sara and Emily develop a co-dependent romantic relationship with one another. In FrAmed", Detective Linda Tanner is looking through security footage of the Art show the girls attended after Aria's photographs, that were meant to be put on display are switched with Photos of the girls from the Dollhouse. Tanner notices a figure dressed in black, whose face is never caught on camera but they are shown to have short blonde hair. This is believed to be Sara, since she was the only helper Charlotte had left that had hair like that. In "Game Over, Charles", the Liars as well as Mona manage to break into a restricted room with Sara's aid who remembers a specific date meaningful to A. While the girls enter the room, Harvey suspiciously leaves them behind. As the Liars and Mona discover a hologram which monitors a live feed of Charlotte at Radley telling Alison her story, Sara sets up a bomb to detonate inside of the sanitarium as part of Charlotte's final plan to kill her family along with herself. Charlotte reveals Sara's role as The Black Widow and Red Coat to the Liars, much to the dismay of Emily. The Liars arrive in time to subdue Harvey, while Spencer disables the bomb. Charlotte flees to the roof to jump and Alison begs the Liars to help her stop Charlotte from jumping. Sara tries to escape but Emily grabs her hood and punches Harvey in the face for her betrayal.