'Pretty Little Liars' Season 6 is taking a brief break, as episode 6 titled 'No Stone Unturned' will not be aired on the scheduled day Tuesday, July 7. Instead, the episode will now be aired on July 14 on ABC.

Citing a report in TV Listings, IB Times states that a different show 'That 70s Show' will replace 'No Stone Unturned' at 8 p.m. on Tuesday, July 7.

As reported earlier, when the 'Pretty Little Liars' Season 6 returns with episode 6 next week, the teen drama mystery thriller series on ABC will continue its summer of answers as the Liars will be trying to unearth more regarding Lesli, Mona's friend whose witness was responsible for the Liars landing in jail in Season 5.

In fact, fans saw Lesli appearing again in Season 6 episode 5 titled 'She's No Angel' and threatened Mona with consequences for being responsible for the problems in her life. After this incident, Hanna and Spencer found Mona trying to steal Lesli's file from Radley, and it was soon disclosed that Lesli was also at the sanitarium along with Mona, Bethany and Charles DiLaurentis.

Following the shocking revelation in last week's episode that A may possibly be a girl, the Liars are now suspecting Lesli to be A or a member of the A team. According to the recently released official synopsis of the upcoming episode, in 'No Stone Unturned' the girls will try to collect additional evidence to establish their theory.

However, this might turn out to be a hard task, executive producer Marlene King said during a Twitter chat revealing that Charles is A.

In an earlier episode this season, DiLaurentis revealed that Charles, Jason and Alison's elder brother, took his own life when he was 16. Hence, in case Charles is really dead then someone else is posing as Charles and hurting the Liars for reasons best known to him.

There is another possibility and that is Charles being still alive. He may have faked his death to get out of Radley.

The answers to all these queries will be revealed in 'Pretty Little Liars' Season 6 episode 10 - the mid-season finale of the season.

In the meantime, the synopsis for 'No Stone Unturned' says that A is going to increase his threats, as the Liars begin to unearth his truth.

The synopsis of 'No Stone Unturned' reads, "With all signs pointing to Lesli as the tormentor in the hoodie, the PLLs are on a mission to get concrete proof before bringing their findings to the police. But as the girls ramp up their investigation, "A's" threats escalate. Meanwhile, a friend of Emily's makes her a surprising offer and Spencer is pressured by her family to make an important decision."