• The upcoming episode of “Pretty Little Liars” will reveal several mysteries surrounding the season.

The upcoming episode of “Pretty Little Liars” will reveal several mysteries surrounding the season. (Photo : Youtube/Pretty Little Liars Promo)

In the newly-released promo for episode 7 of "Pretty Little Liars," Jason returns to save Alison from their aunt, Mary Drake. It can be seen in the preview that Alison's big brother warns their aunt to "get the hell off my property." Meanwhile, the video also featured the PLLs struggling inside a vehicle planted with a bomb while Hanna says "Oh my God, we're going to blow up... that's what countdown means."

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The last episode left off with a lot of revelations especially on the side of Jenna and Alison. It can be recalled in episode 5 that the returning character came to Alison's house looking for "Elliot Rollins." Alison then realized something is still going on that's related to his late husband whom she thought they already killed.

Episode 6 revealed that Jenna is actually Charlotte's friend, and was the one who introduced the latter to "Elliot Rollins" whose real name is Archer Dunhill. Jenna then told Alison that Archer loved Charlotte so much he looked for a way to get her out of mental hospital and ended up having Alison whom they used to vouch for Charlotte in front of a judge, International Business Times reported.

During episode 6, Alison was heavily upset by knowing that her friends dropped her to save Charlotte's life. She then confronted Spencer and showed her how disappointed she was knowing they have chosen someone over her.

On the positive side, Alison's big brother arrives. Jason confronted Mary Drake and warned her to stay away from him and his sister. Despite this, the PLLs continue to struggle with the repercussions of killing "Elliot Rollins" as shown in the promo released.

Hanna is still being haunted by a voice who have threatened her multiple times using Elliot Rollins' burner phone. With the continuous warnings being shown in the series, several speculations have already appeared.

Now that it seems Archer Dunhill is still alive, there is a possibility Toby may be in danger as he is leading the trail for the former's case. It may be possible Spencer warns her ex-lover about the looming danger that awaits him, Wet Paint reported.

"Pretty Little Liars" airs every Tuesday, 8 pm ET at Freeform. Watch the video clip below for more details on the upcoming episode.