Queen of Hearts

The Queen of Hearts first appeared in the Season 3 Halloween episode "This Is A Dark Ride" she/he is the reason for aria being drugged and also tried to kill Spencer.

In "Kingdom of the Blind" Mona is seen at the end singing "The Eye Abides the Heart" and is seen holding a queen of hearts card, meaning that she may be in cahoots with her/him

In "This Is A Dark Ride" ehe Adam Lambert is walking away from Aria, we can spot the queen of hearts in the background looking at them. She is seen with the pills that Mona gave earlier in the episode. He/she then walks over and puts the pills opin Aria's drink.

Later, when Spemcer goes back to look for Garret. She has a dangerous encounter with her. Shz/he is trying to throw them Spencer off the train but she manages to run away. The queen of hearts chases her and starts to choke Spencer. But, Paige comes to the rescue and she/he leaves a Red nail in spencers hair.

Spencer meets up with Hanna and tests the nail on Hannas nail. Its really big and hays say " That's a big girl" and Spencer replies " Or maybe its not for a girl at all. Which questions the Gender.