Pretty Little Liars season 4’s Halloween episode “Grave New World” airs tonight at 8 p.m. EST on ABC Family! Get ready by viewing the promo, refresh your memory on what the episode is about, and find out where to catch the episode online.

The synopsis for ‘Pretty Little Liars’ season 4 Halloween episode is:

“Aria, Emily, Hanna and Spencer crash the Ravenswood Founders Day Celebration after finding a clue in ‘A’s’ new lair that Ali may indeed be alive. Dressed in their finest Edwardian wear, the ladies hit the creepy cemetery party to find Ali before ‘A’ can. But if Ali is truly alive, could the PLLs be leading ‘A’ straight to their friend without knowing it? With Ezra lurking in the shadows, ‘A’ may be closer than the girls realize. Meanwhile, Caleb heads to Ravenswood to help the girls and meets kindred soul Miranda (Nicole Gale Anderson) along the way.”

Watch the promo for the episode below:

Where to watch ‘Pretty Little Liars’ season 4 Halloween episode online:

If you’re unable to watch the episode live, ABC Family offers full episodes of Pretty Little Liars the following day on Hulu.

If you’re not able to watch the episode live, we suggest you avoid Twitter if you detest spoilers. The Pretty Little Liars fandom generally takes over the social media platform during its episodes. The hastag for tonight’s episode is #PLLSearchParty.

Will you watch ‘Pretty Little Liars’ season 4’s Halloween episode live?

Photo credit: ABC Family