Did we ever find out who A actually was? How many A's were there exactly? Was anything in this show ever actually explained? There was so much back and forth throughout the run of this show that it's nearly impossible to even come up with a coherent synopsis for what the show was about. However, one character whose antagonistic nature seemed to be pretty stable, even when she was helping out one of the main characters, was the character of Mona Vanderwall. The geek girl, turned sexy mean girl was one of the most fun characters to follow throughout the run of the show. In flashbacks, she is often shown in childish attire, glasses and pigtails, representing her innocence at that point in time. In the main time line however, with her blood red lips, cat eyes and darker color palette, her questionable morality is clear. Ladies and gentleman, never trust a girl with blood red lips.

When we first meet Ezra Fitz, he's flirting with Aria at a bar. He's later making out with her and then later regretting that.

Hanna learned a valuable lesson from her mom on the series premiere: don't steal, but do sleep with cops to get your daughter off when necessary.

This is the final scene of the Pretty Little Liars pilot episode. In it, all four girls react to a text that simply can't be... can it?!?

Lucy Hale plays a key role on Pretty Little Liars. She plays Aria, a high school student often up to no good.