<P> Jenna is working anonymously for "A.D." and also with Archer Dunhill in someway . She remains around Rosewood in "Along Comes Mary" and befriends Sara Harvey . Meanwhile, Aria Montgomery and Emily Fields discover that Jenna was on Archer's payroll for unknown reasons . On the episode's closing scene, Marshall and Sara are having drinks at The Radley when an unknown figure approaches the two and reveals themselves to be Noel Kahn, who proceeds to join the duo . When confronted by Emily in regards to her involvement with Archer during "Wanted: Dead or Alive", Jenna admits she befriended Charlotte DiLaurentis after reading about her stay at Welby and reached out . In a flashback, Charlotte enlists Jenna's help to track down the whereabouts of her birth mother and come up with an alias for Archer . The pseudonym "Elliott Rollins" was later created so Archer could deliberately meet Alison and take advantage of her good intentions to benefit Charlotte's eventual release from the psychiatric hospital . In "The DArkest Knight" all of the Liars get a text message, ordering them to head over to 1465, Elm Street . After being lured to an abandoned school for blind students, they're held hostage by Noel and Jenna, with Marshall tracking them down at gunpoint . During the cat - and - mouse chase, Jenna takes aim at the Liars only to backfire, until a second gunshot is heard and it injures Spencer . As Marshall prepares to finish her off, Mary Drake suddenly emerges from behind and knocks her out . While Drake attempts to help Spencer, an unknown figure drags Jenna away from the building . On the closing scene of the episode, the anonymous entity places her in the back of a van, while she questions them if they were responsible for the gunshot that hit Spencer . As the mysterious figure proceeds to rip off an old man's mask and toss it over to Jenna's side, Marshall feels it up and realizes that A.D. was the one who rescued her . At the end of "Playtime", Jenna is seated in A.D.'s lair, sipping tea . She thanks the unidentified individual for the drink and reminds them of their promise to update her on the "game". Dressed in a nurse's uniform, A.D. drops a binder on Marshall's lap with pages of information written in braille . After Jenna reads a paragraph, she mutters the word "endgame" and grins in delight . During "These Boots Were Made for Stalking", Jenna walks into the police station in order to come clean about her actions and interrupts a conversation between Spencer and detective Marco Furey . Marshall reports that she kept a low profile after the events that took place at the abandoned school for blind students to avoid being harmed by Noel . According to Jenna, Noel was accountable for Sara Harvey's homicide and she feared to be his ensuing victim . Kahn recruited Jenna with the assertion that Charlotte left enough money in her will to afford Marshall another eye surgery . Nevertheless, Jenna suspected Noel of stealthily plotting to steal the cash all to himself since his parents had financially cut him off . In an attempt to spare her life, Marshall brought a gun to the deserted sight school as an act of self - defense and pretended to hold a grudge against the Liars . After Jenna describes her side of the story, Furey orders one of his associates to escort Marshall to a conference room so she can make an official statement . As Jenna exits the room, Spencer claims that she's an unreliable narrator . However, Furey informs Spencer that the authorities don't have enough evidence against Marshall because the bullet that injured Spencer didn't match the gun found at the location . Later in the episode, Caleb confronts Jenna stating that the authorities were already detecting holes in her allegations . However, Marshall assures Caleb they won't be able to prosecute her since Noel was the only person who could contradict her statement . In the series finale, Spencer's twin, Alex Drake, is revealed to be "A.D.". She reveals that Jenna was looking for her and recruited Noel to help . However, Jenna was desperate for another chance to see and offered to help her in the game . </P> <P> Noel Kahn returned to Rosewood to team up with Jenna Marshall and Sara Harvey . Kahn served as one of Charlotte's former minions and worked for her at the Dollhouse, having been responsible for placing blood all over Spencer Hastings to convince she had hurt someone . Noel became the prime suspect for Uber A, particularly after Alison reveals that he pushed a girl down a flight of stairs when he was drunk during a UPenn frat party . Hanna abducts him at the end of "The Wrath of Kahn" in an attempt to obtain a video confession that proves he's their tormentor . In the following episode "The DArkest Knight", she instead ends up slashing his leg with a knife in order to test his DNA and see if it matches Mary Drake's . The results later come back negative and Kahn ends up escaping . Noel and Jenna later lure the Liars to an abandoned school for blind students so they could be held hostage and eventually murdered . During a cat - and - mouse chase, Kahn ends up stumbling upon an axe that decapitates his head after failing to fight Emily and Hanna . In the following episode, "Playtime", Detective Marco Furey informs Spencer that Jenna and Noel frequently visited Archer Dunhill at Welby . During "These Boots Were Made for Stalking", Jenna walks into the police station in order to come clean about her actions and interrupts a conversation between Spencer and detective Marco Furey . Marshall reports that she kept a low profile after the events that took place at the abandoned school for blind students to avoid being harmed by Noel . According to Jenna, Noel was accountable for Sara Harvey's homicide and she feared to be his ensuing victim . Kahn recruited Jenna with the assertion that Charlotte left enough money in her will to afford Marshall another eye surgery . Nevertheless, Jenna suspected Noel of stealthily plotting to steal the cash all to himself since his parents had financially cut him off . In an attempt to spare her life, Marshall brought a gun to the deserted sight school as an act of self - defense and pretended to hold a grudge against the Liars . However, when Caleb later confronts Jenna about the authorities detecting holes in her allegations, she informs him that the only person who could contradict her side of the story was Noel . </P> <P> Aria is "A.D.'s" helper . Aria is given the offer to join the team in "Power Play". She accepts in the following episode and begins supplying information to Uber A. After the Liars discover Lucas' graphic novel, Aria is sent by Uber A to retrieve it . Once she delivers it, she is given an "A" hoodie in return . She breaks into Alison's house sporting the disguise and trashes the nursery for her baby . In the next episode, Aria is sent by "A.D." to deliver a "gift" to the Hastings family . She connects to their Bluetooth and leaves a burner phone there to play a video recording of Peter and Mary discussing Jessica's murder . She later gets back into her "A" disguise and breaks into Alison's house to put the puzzle piece onto the and retrieve her file . "A.D." contacts Aria again and gives her a phone to communicate on . "A.D." asks Aria to meet them and to wear the uniform to do so . Mona overhears the call and tells the Liars of Aria's involvement with the A-Team . Aria gets into her "A" hoodie and goes to meet "A.D.", only to be confronted by the Liars . She then officially defects from the team and rejoins the Liars . </P> <P> Mary joins the A.D. - Team after the time jump, when Alex helps break her out of prison and then helps her with kidnapping Spencer and keeping her locked away in their bunker . When Alex tries to kill Spencer, Mary tries to convince her to just keep her locked up, but Alex refuses and punches her to keep her from interfering . Mary and Alex are then kidnapped by Mona and kept as her dolls in her own personal dollhouse . </P>

Who is part of the a group in pretty little liars