Tonight’s episode of “Pretty Little Liars” answered the question every fan has been asking for two seasons now: who is ‘A’!? Some loyal fans were totally shocked while others had predicted correctly that ‘A’ was in fact Mona Vanderwall played by Janel Parrish.

Ever since their best friend Alison was murdered, Aria (Lucy Hale), Spencer (Troian Bellisario), Hanna (Ashley Benson) and Emily (Shay Mitchell) have been getting mysterious texts that threaten to reveal their deepest, darkest secrets, and the person behind the messages identifies herself (or himself) only as “A.” During the episode “unmAsked,” the girls attended a masquerade ball where the perpetrator behind ‘A’ was finally revealed to be Mona.

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Fans had many guesses and theories as to who ‘A’ is, including Spencer’s older sister, Melissa who had been a prime suspect. But up until tonight there were only clues, and only one thing was completely certain: ‘A’ is dangerous.

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Below are some snapshots from the episode. Are you shocked about who ‘A’ is? New episodes of “Pretty Little Liars” will return to ABCFamily in June.

VIA ABCFamily