'Pretty Little Liars' season 7 episode 10 spoilers: is Jenna responsible for death of a Liar?

'Pretty Little Liars' season 7.facebook.com/prettylittleliars

The Liars will face their worst enemies in the fatal summer finale of "Pretty Little Liars" season 7.

In the trailer for episode 10, titled "The Darkest Knight," Hanna's (Ashley Benson) plans to make Noel Kahn (Brant Daugherty) confess that he is A.D. seems to have backfired after he seemed to have escaped from her clutches.

The clip also shows that Hanna, Aria (Lucy Hale), Emily (Shay Mitchell), Alison (Sasha Pieterse), and Spencer (Troian Bellisario) will be tormented by Noel and Jenna (Tammin Sursok), and their confrontation will end violently. In the clip, Jenna seems to have shot one of the Liars, and Spencer asks her what she has done. Does it mean that one of the girls will end up in the grave before the series returns for the second half of the season?

But despite the possibly bloody summer finale, fans of the series will rejoice at the romantic reunion of two of the most love pairings of the show.

In the trailer, Spencer and Toby (Keegan Allen) are seen lip locking even if he recently said goodbye as he planned to move to Maine to be with his fiancée Yvonne (Kara Royster). Spencer's other ex-boyfriend Caleb (Tyler Blackburn) and Hanna also seem to have rekindled their romance, as seen in their steamy encounter in the upcoming episode.

But the mysteries continue to unfold in the upcoming episode. According to the synopsis, "The Liars face off with their enemies in a chaotic fight that ends fatally. One of the PLLs learns a secret about her past that changes everything while another Liar discovers something about her future that could alter her course forever."

Will the Liars find more clues about Mary Drake's second child in the upcoming episode?

"Pretty Little Liars" season 7 episode 10 airs on Tuesday, Aug. 30, on Freeform.