"Pretty Little Liars" season 6 episode 4 titled "Don't Look Now" is set to be a point of no return for the girls. According to the official synopsis posted by TV Line, this episode has Kenneth (Jim Abele) telling Allison (Sasha Pieterse) who Charles really is and what his connection is to their family. 

According to a report from Carter Matt, Kenneth will unveil everything there is to know about Charles, including who he is, what he wants, and where he comes from. Moreover, a report from the IBTimes states that Allison will reveal to the rest of the Liars that Charles is already dead and this may change a lot of things for the group. 

It's possible that Charles set all these things in motion prior to his death or maybe someone is using his identity against the Liars. Either way, according to the synopsis, Kenneth tells the girls that all the information regarding Charles can be found at the Radley Sanitarium. However, the place has changed since the girls were last there. The Sanitarium is abandoned and all the documents are being moved to the new location. They'll have to get whatever they can before all the documents about Charles are destroyed or lost forever. 

According to the iDigital Times, it is possible that Charles is Jason's (Drew Van Acker) fraternal twin, a middle child in the DiLaurentis family, or an illegitimate child. The report also recalls a statement from series creator I. Marlene King who stated that Charles was already shown in season 5 although he was never called as such to retain his identity. 

Charles won't be the only focus of the episode, however. According to the IBTimes, Spencer (Troian Bellesario) will be on the hunt for a solution to her sleeping problems while Caleb's forceful nature to protect Hanna ends up hurting her, complicating their relationship even further. 

"Pretty Little Liars" season 6 episode 4, "Don't Look Now," airs on June 23.