who is working for a in pretty little liars
A (Pretty Little Liars) 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.[11] 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.