"Game Over, Charles" is the tenth episode of the sixth season of the ABC Family mystery drama series Pretty Little Liars, serving as the mid-season finale. It is the 130th episode, overall, originally airing on August 11, 2015, on ABC Family. It was written and directed by showrunner I. Marlene King. ABC Family promoted the finale with the slogan "#facetoface", which served as an indication that the mysterious villain "A" would be revealed in the mid-season finale.

In the episode, Alison, Aria, Emily, Hanna, Spencer and Mona finally uncover the true identity of "A," who turns out to be CeCe Drake, and they learn why she has been tormenting them. In addition, the episode includes a time jump, as the Liars return to Rosewood after being away for five years.

Game Over, Charles

"Game Over, Charles" was watched by 3.09 million viewers and garnered a 1.4 rating, making it the most-watched episode of the sixth season, and the most-watched episode since the fourth season finale 'A' Is for Answers," up from the previous episode.

Game Over, Charles

Plot

At the prom, Aria (Lucy Hale), Emily (Shay Mitchell), Hanna (Ashley Benson), Spencer (Troian Bellisario) and Sara Harvey (Dre Davis) meet Mona (Janel Parrish), who reveals that she has been following Alison (Sasha Pieterse) all night to protect her. Mona locates Alison's phone at the Carissimi Group building, and the girls head to the company's headquarters. There, Spencer breaks into a restricted room after Sara remembers a specific date meaningful to Charles, which is the code for unlocking the door. While the girls enter the room, Sara refuses to accompany them. They discover a hologram which monitors a live feed of the room that Alison has been taken to. As the girls witness Alison discovering Jason and Mr. DiLaurentis's unconscious bodies, they realize she's alone with "A," who is revealed to be CeCe Drake (Vanessa Ray).

Game Over, Charles

With everyone in the DiLaurentis family present, CeCe begins to tell them her story. She reveals that she was born as a boy named Charles DiLaurentis. When she was eight years old, she gave Alison a bath, but accidentally dropped her in the scalding water. Kenneth saved Alison, but Charles was admitted to Radley as a consequence. According to CeCe, as a child she asked her mother to purchase her dresses, but Kenneth despised his son for being feminine, so he used the bathtub incident as an excuse to send him away. Jessica paid a visit to Charles as often as she could, in an attempt to make him feel less alienated.

When Charles was 12 years old, Bethany Young pushed Toby's mother, Marion Cavanaugh, off Radley's roof. However, Bethany blamed Charles for Marion's homicide, and everyone believed her word due to Charles sporting a dress at the time of the incident and refusing to be seen in it. Jessica paid off Darren Wilden (Bryce Johnson) to make sure Mrs. Cavanaugh's death was ruled a suicide. Charles was diagnosed with intermittent explosive disorder (IED), although this was actually an accurate diagnosis for Bethany. For the next two years, Charles was heavily medicated with tranquilizers, but he was let out to attend his fake funeral. After the funeral at Aunt Carol's, Jessica finally accepted Charles as her daughter and took her back to Radley, renamed Charlotte.

Charlotte dedicated herself to math as a way to escape reality. She did so well in her studies that she was allowed to attend classes at the University of Pennsylvania. She thought going to school would be fun, but it was easy for her since she already knew what she was being taught. One day, she called in a bomb threat to cancel classes. She used the opportunity to go to Rosewood High for yearbook picture day, where she met Jason, whom she began dating under the CeCe Drake alias in order to get closer to her family. Jessica didn't know that CeCe Drake and Charlotte were the same person until the day the DiLaurentises were leaving for Cape May. Although initially angered at her children's incestuous relationship, Jessica allows Charlotte to go on vacation with the rest of the family. In Cape May, Charlotte became close friends with Alison and even planned to tell her they were related. However, Bethany found out about Mrs. D's affair with her father, thus ruining Charlotte's opportunity to tell her sister the truth. On Labor Day Weekend, Bethany stole Charlotte's clothes and snuck out of Radley to murder Jessica at the DiLaurentis property. This led to Charlotte accidentally bashing Alison in the head with a rock that night, believing she was Bethany. Jessica buried Alison out of panic and paid Wilden to take Charlotte back to Radley.