Pretty Little Liars Season 7 spoilers: Spencer's parentage and Alison's pregnancy coming in final

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Pretty Little Liars just ended the first half of its final season last Tuesday and Freeform already anticipated the barrage of requests from fans and released the trailer for Season 7B.

Among the things to note from the promo was what happened to Spencer after the gunshot, as well as the revelation that Spencer is Mary Drake's second child. This will be a driving force for the bottom half of the season, reported TVLine.

The identity of A.D. was also revealed and another bombshell was confirmed. Alison is also confirmed to be pregnant.

The show's final episodes, which will air on 2017 promises to be exciting since it will be the series' swan song.

In an interview with showrunner Marlene King, she explained that no one is safe from A when the show returns, not even the original cast members.

"Spencer, like every other character on the show, is subject to their demise. "A" is a equal-opportunity killer. It's possible that we'll see them in flashbacks," King said.

She also said that there will be more than one wedding when the show returns for its last episodes.

"It was process for everyone. Creatively, I've always known what these last 10 episodes would be, just not necessarily when they would be," she said.

According to the showrunner, decisions about the ending were made as a team. She promised that they want to go out with a show that engages it's audience not just with the series but through other forms of social media.

"The last episode will be treated as a two-hour movie. I always say to myself, 'How I can make myself feel better about the show coming to an end?' We're open to finding ways to keep these characters alive. I hope that down the line we find a way to bring all the girls back together again. It's such a fun world to play in that we're all just keeping those options open," she said about the possibility of a PLL film.