<P> The Liars find videos in Noel's cabin of him torturing them in the dollhouse . Hanna kidnaps Noel after negotiating with him doesn't work and films an interrogation video . He manages to escape and lures the Liars to an abandoned blind school . They leave the dollhouse videos on a table and someone takes them but Noel and Jenna attempt to murder them . In the confrontation, Noel is accidentally killed, and Spencer is shot by A.D., while Jenna corners Spencer . Jenna prepares to kill Spencer, but is knocked out by Mary . She then reveals that Spencer is her second child . A.D. saves Jenna who asks if they shot Spencer . </P> <P> One week later, Spencer has recovered and A.D. sends Jenna to confess to the cops that Noel wanted money Charlotte left Jenna for another eye surgery, killed Sara and tried to kill Jenna in the blind school . Peter returns and reveals that Mary is the one who killed Jessica . Hanna and Spencer follow the trail of a private investigator he hired to find Mary and bump into Ted who reveals he has been hiding her as she is his college fling with whom he conceived Charles . Mary reveals to Spencer that Peter and Jessica were planning to kill her, thus she used his pills to kill Jessica . A.D. then uses Emily's stolen eggs to impregnate Alison, as a way to further torture the liars . Meanwhile, A.D. hires Sydney Driscoll as their helper and she fakes being A.D. to recruit Aria into joining the A.D. team . Aria is forced into playing and becomes A.D.'s new helper, destroying Emison's baby nursery and leaving an "A" message in Spencer's house, until the Liars catch her in the act and she defects . Mona, who is becoming addicted to the A-game again, reveals that she tried to scare Charlotte into not resuming the A-game but Charlotte attacked her and she killed her in self - defense . Mary confesses to Rollins and Jessica's murder . A.D. ends the game as they have finally learned that Mona was Charlotte's killer . </P> <P> One year later, Mary escapes from prison and Mona is released from Welby but rejoins the A-Team and is sent to kidnap Spencer, who comes face - to - face with A.D.--Alex Drake, her twin sister . Mary reveals she sold Alex to a London family to get out of Radley . Alex ran away and met Wren who revealed everything about Spencer to her and introduced her to Charlotte who left her everything . She became A.D. to use the Liars to find Charlotte's killer and killed Wren as he always saw her as Alex while she wanted to become Spencer to have her "perfect life". She explains that Sara was looking for Charlotte's false treasure in the Radley which was actually the secret file and Jenna recruited Noel to look for "Charlotte's sister". Jenna uses her enhanced sense of smell to figure out "Spencer's not Spencer" and alerts Toby who tells the others . Mona reveals to them that Wren was going to kill her but she convinced him she could get Mary out . The Liars, Toby, Mona, and Caleb come face to face with Alex and Spencer as they cannot tell them apart, until Toby makes the distinction by asking what Spencer's favorite poem from a book she gave him . Mona tracked A.D.'s location has a cop arrest her . The Liars then say goodbye to one another as Aria leaves for her honeymoon with Ezra . Mona moves to Paris and the "cop" is revealed to be her boyfriend who has imprisoned Alex and Mary in her basement dollhouse . In the finale moment, a new set of liars are awaken to find their leader, Addison, has just gone missing . </P> <Table> <Tr> <Td> <H3> Main (edit) </H3> <Ul> <Li> Troian Bellisario as Spencer Hastings and Alex Drake </Li> <Li> Ashley Benson as Hanna Marin </Li> <Li> Tyler Blackburn as Caleb Rivers </Li> <Li> Lucy Hale as Aria Montgomery </Li> <Li> Ian Harding as Ezra Fitz </Li> <Li> Laura Leighton as Ashley Marin </Li> <Li> Shay Mitchell as Emily Fields </Li> <Li> Andrea Parker as Mary Drake and Jessica DiLaurentis </Li> <Li> Janel Parrish as Mona Vanderwaal </Li> <Li> Sasha Pieterse as Alison DiLaurentis </Li> </Ul> <H3> Special guest stars (edit) </H3> <Ul> <Li> Holly Marie Combs as Ella Montgomery </Li> <Li> Chad Lowe as Byron Montgomery </Li> </Ul> <P> </P> </Td> <Td> <H3> Recurring (edit) </H3> <Ul> <Li> Nicholas Gonzalez as Detective Marco Furey </Li> <Li> Keegan Allen as Toby Cavanaugh </Li> <Li> Tammin Sursok as Jenna Marshall </Li> <Li> Lindsey Shaw as Paige McCullers </Li> <Li> Brant Daugherty as Noel Kahn </Li> <Li> Lulu Brud as Sabrina </Li> <Li> Huw Collins as Dr. Elliott Rollins / Archer Dunhill </Li> </Ul> <P> </P> </Td> <Td> <H3> Guest (edit) </H3> <Ul> <Li> Lesley Fera as Veronica Hastings </Li> <Li> Brendan Robinson as Lucas Gottesman </Li> <Li> Vanessa Ray as CeCe Drake / Charlotte DiLaurentis </Li> <Li> Kara Royster as Yvonne Phillips </Li> <Li> Jim Titus as Detective Barry Maple </Li> <Li> Chloe Bridges as Sydney Driscoll </Li> <Li> Nia Peeples as Pam Fields </Li> <Li> Drew Van Acker as Jason DiLaurentis </Li> <Li> Nolan North as Peter Hastings </Li> <Li> Julian Morris as Wren Kingston </Li> <Li> Roma Maffia as Lieutenant Linda Tanner </Li> <Li> Dre Davis as Sara Harvey </Li> <Li> Shane Coffey as Holden Strauss </Li> <Li> Rebecca Breeds as Nicole Gordon </Li> <Li> Ava Allan as Addison Derringer </Li> <Li> Torrey DeVitto as Melissa Hastings </Li> <Li> Edward Kerr as Ted Wilson </Li> <Li> John O'Brien as Principal Arthur Hackett </Li> <Li> Roberto Aguire as Liam Greene </Li> <Li> David Coussins as Jordan Hobart </Li> <Li> Meg Foster as Carla Grunwald </Li> <Li> Mary Page Keller as Dianne Fitzgerald </Li> <Li> Emma Dumont as Katherine Daly </Li> <Li> I. Marlene King as Wedding Photographer </Li> </Ul> <P> </P> </Td> </Tr> </Table>

What happens at the end of pll season 7
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