<P> Spencer joined the A-Team briefly near the ending of the third season after having been invited by Mona at the Radley while hospitalized . Initially, Spencer was extremely determined to be part of the team . However, she later unfolds the truth behind the disappearance of Toby and became a double agent as well . Likewise Toby, she got kicked off from the team . She is the "A" who kidnapped Malcolm, causing a break up between Ezra and Aria . </P> <P> Lucas was the personal assistant to Mona . He was blackmailed by Mona and the A-Team into sending texts and doing their dirty work . Lucas claims his blackmail began after Mona discovered he was selling test answers, however Mona later discloses that Lucas was the "A" who gave Emily a massage back in the second season while Mona was off riding with Hanna . During the seventh - season episode "Hold Your Piece", Pastor Ted Wilson reveals to Hanna that he used to run a summer camp for troubled boys, and Charlotte was a camper there prior to her sex change . Wilson is disheartened when describing that he interacted with his offspring without awareness they were related . Ted then showcases Hanna a picture of himself back when he worked at the camp, chaperoning Charles and Lucas, whom he described as his son's "only friend". </P> <P> Melissa was blackmailed by Mona into wearing the Black Swan disguise to the Masquerade Ball in order to distract Jenna . Mona threatened to reveal her fake pregnancy if she didn't obey her orders . Later, Melissa got onto the Halloween Train dressed as the Queen of Hearts and drugged Aria . Wilden then attempted to push her off of the train in a box with Garrett's dead body . It is implied that she was once again blackmailed . It is implied in "A Dark Ali" that Melissa is once again working for "A", as she is seen handing a recording (presumed stolen by "A") to a man resembling Cyrus Petrillo and later implies to Spencer that "A" has something in store for Ali and the Liars . </P> <P> Wilden was also part of the team as he was the Queens of Hearts responsible for trying to kill Spencer . He also murdered Garrett Reynolds fearing he'd expose him as a crooked cop and placed his corpse in a box beside a fainted Aria . Wilden's reasoning for helping the team is unknown but implied to be blackmail . </P>

Who is working for a in pretty little liars