Pretty Little Liars Christmas Special, “How the ‘A’ Stole Christmas,” airs tonight at 8 p.m ET on ABC Family! Check out all the stills and this week’s promo to get you ready for the new episode.

So we’re finally here, the Christmas Special that we’ve been hearing about for months. The girls are still feeling down after Mona’s death but it seems like all of their significant others are working hard to put them in the holiday spirit. And speaking of spirits, expect to see Mona back this episode as the ghost of Christmas here to haunt Ali.

To catch up on all the details from the season 5A finale, you can read the full recap here.

The synopsis for ‘Pretty Little Liars’ Christmas Special:

“Christmas is quickly approaching, and all of Rosewood is full of merriment, except for Aria, Emily, Hanna and Spencer, who aren’t feeling much holiday cheer after the loss of Mona and Spencer’s murder charge looming over them. But when an opportunity presents itself with the chance to get evidence to clear Spencer’s name, the girls and their partners devise a plan to get justice for Mona and finally bring Alison down. If the plan is successful, it could be a very Merry Christmas after all.

Meanwhile, Alison gets a glimpse at the past, present and future by a ghostly presence.”

Stills for ‘Pretty Little Liars’ Christmas Special:

Watch all the promos and clips for the episode below:

Where to watch ‘Pretty Little Liars’ Christmas Special, ‘How the A Stole Christmas’ online:

If you cannot watch Pretty Little Liars live, ABC Family will put the episode on Hulu the next morning or you can set your DVR and watch it whenever you’d like. As always, try to avoid Twitter if you don’t want to risk getting spoiled.