Pretty Little Liars' 'A' won't give Rosewood a Merry Christmas, but he may deposit Mona's body as a holiday gift.

Major 'A' Reveal Coming On 'Pretty Little Liars', Will It Involve Mona's Flashbacks?

Mona was killed of in the mid-season finale, but in the absence of her actual body, the identity of her murderer, the why, and the how all remain a mystery. Now that we know there will be a funeral of sorts at Christmas, Mona's final moments may start to come to light.

"For those who have been asking for clues. #PLLChristmas," tweeted series creator Marline King alongside a photo of a silver casket and an empty church.

Mona's 'Violent' & 'Bloody' Death To Be Revealed On 'Pretty Little Liars', Janel Parrish Talks Flashbacks

Despite her death, Mona won't disappear from Rosewood for long, and Parrish recently spilled that her character will appear in the Christmas special. It remains unclear whether Mona will join the cast as part of a flashback, appear as a corpse, or do a little of both.

"I will be in the Christmas episode, which is like the new Halloween episode special, but it's still an episode with lots of questions and answers so I'll be in that," Parrish explained, according to TV Fanatic.

Find out who's in the casket when Pretty Little Liars returns this December. Click the video below to see a clip from the upcoming episode.