She tells Spencer that she is leaving and wants Spencer to go with her. Her reasons being that she wants to make up for lost time and save her from the crazinees of Rosewood.
Her birth mother, Mary Drake, was a patient at Radley while she was pregnant. Jessica, Mary's sister, told Veronica Hastings that Mary was pregnant with Veronica's husband, Peter Hastings's child. Veronica couldn't stand the thought of the child being forgotten, so she agreed to adopt her.
Melissa was unaware of Spencer's adoption and thought they were biological sisters. They are actually half-sisters, as they share the same father but different mothers. They are also adopted sisters since Veronica adopted Spencer. They share a half-brother, Jason DiLaurentis.
She is also the cousin of Alison DiLaurentis. Alex wanted to avenge Charlotte's murder, and believed the Liars knew who did it which pushed her to become the infamous Uber A. She was also jealous of the life that her twin sister was able to have, while she was abandoned by a rich British family.
Spencer's Parentage Is Confirmed On 'PLL'
It turns out that Mary Drake wasn't lying when she told Spencer she was her mother. As Veronica tells Spencer, Mary Drake got pregnant after a run-in with Spencer's father, Peter, in a restaurant one night.
Officially introduced in the series finale, Alex Drake is both the identical twin of main character Spencer Hastings and the previously anonymous identity known as "A.D." In childhood, Drake was adopted by a wealthy British family that later abandoned her, forcing Alex to bounce around foster homes and orphanages.
In one of the most heartbreaking moments in Pretty Little Liars history, Veronica confirmed that Mary Drake is Spencer's biological mother on PLL' s Season 7B premiere "Playtime." Spencer...
She attempts to help Wren reconcile with Melissa but both parties are uninterested. Spencer starts dating Alex Santiago who works at her family's country club. Her mother initially dislikes him, but later reveals it is because she is embarrassed that she drunkenly revealed her breast cancer scare to him.
Melissa clarifies to Spencer that she stayed at the resort with Ian when she was getting a secret abortion. She further explains the abortion never took place, as she miscarried. Melissa adds that losing a child made the follow-up pregnancy much more pivotal. Spencer is simply stunned at her affirmations.
The big reveal, of course, was the identity of Uber A. It turns out that Spencer (Troian Bellisario) had an evil twin this entire time, and that "A.D." refers to her initials — Alex Drake.
According to her taped confession — which you know “A” is going to get his/her/its hands on — Melissa saw Spencer with a shovel the night Alison disappeared. She thought Spencer killed Ali, so she pushed her into a ditch and buried her.
Although Melissa does not believe Spencer at first that her husband is dead, she starts to wonder if Spencer might know something that she doesn't, reasoning that Ian would never leave his pregnant wife.
Charlotte knew that Spencer was her half-sister prior to the Dollhouse, but viewed Spencer as a doll and not a sister. They share Jason DiLaurentis as a brother - Spencer is Jason's paternal half-sister while Charlotte is Jason's adoptive sister.
Spencer also suffers from PTSD - she had a breakdown when she believed she found her boyfriend's dead body and was placed in Radley again, refusing to speak to anyone, and after she was kidnapped by A, Spencer had severe PTSD and had blackouts in her memory.
Spencer Hastings was the 3rd A to be revealed. Spencer was revealed in 3x23 "I'm Your Puppet". She only joined to see if Toby was alive and to find out who Red Coat is.
Veronica couldn't stand the thought of the baby being forgotten, so she adopted the baby. Immediately after Spencer's birth, a nurse gave Spencer to a man who then gave her to Veronica, who was waiting outside the sanitarium in a car. Spencer was never told that she was adopted.
He had an affair with Jessica DiLaurentis which resulted in the birth of Jason DiLaurentis. He also had a one night stand/affair with Mary Drake (who he thought was her twin sister, Jessica), which resulted in the birth of both Spencer and Alex.
She buried her alive. This is what Melissa whispered to her father while waiting for Spencer in the police station last season and it's why Mr. Hastings wants her far away from Rosewood.
The “A” team revealed: The complete “A” team was revealed throughout the episode, and, as of the end of the finale, the team members consist of — or once consisted of: Shana, Melissa, Jenna, Mona, Toby, and, to a lesser degree, Spencer.
Alex revealed that she was the one who kissed Toby in The DArkest Knight and later had sex with him in Choose or Lose.
Unlike CeCe, who was introduced (under auspicious circumstances) in Season 3, A.D. turned out to be someone fans had never met — at least, not officially — until the series finale. A.D. stands for Alex Drake, CeCe's half sister and the identical twin of … Spencer Hastings.
To protect Charlotte DiLaurentis after she supposedly killed Alison. To get rid of her twin sister Mary Drake.
1. Twist: Spencer Is Mary Drake's Second Child. Just as Spencer grapples with the fallout from a serious gunshot wound, Mary Drake drops a major bombshell: Spencer is her second child. It's pretty interesting, because all the girls hear her say it.
She raised Spencer as a single mother after her husband William left her due to her schizophrenia (among other things ). She read to Spencer often, enforcing his already growing intelligence.