'Pretty Little Liars' Season 6 summer finale is being billed as one of the most anticipated episodes of this teen drama mystery-thriller television series on ABC Family, since it will eventually expose the actual face behind the mask.

According to IB Times, the upcoming episode titled 'Game Over, Charles' will also clarify Charles' motive for targeting the four Liars - Emily, Aria, Hanna and Spencer, along with his own sister Alison.

Meanwhile the official synopsis of the summer finale does not offer much regarding the episode except for stating that it will provide answers to a lot of questions that have been plaguing the viewers since the show's first season. On the other hand, spoilers on the Internet suggest that towards the end of episode 9, Alison will disappear with Charles.

Spoilers also indicate that Charles will be revealing his real identity to Alison first. The rumors suggest that after Alison comes to know the reality about Charles, she will not only stay with him, but also try to protect him from the police.

Meanwhile, the episode will also show the Liars and Mona trying to find Alison's whereabouts.

The official synopsis of 'Pretty Little Liars' Season 6 summer finale reads, "Who killed Toby's mother? Who hit Alison in the head with the rock the night she went missing? Who is Red Coat? Who killed Bethany? Who is the Black Widow? Why has 'A' been targeting the PLLs all this time? After years of torture, Alison, Aria, Emily, Hanna and Spencer finally come face-to-face with their tormentor and learn the story of how and why Charles became 'A'."

 'Pretty Little Liars' Season 6 supper finale will be aired on Tuesday, Aug. 11 on ABC Family.