Tuesday night will be an eventful one for fans of ABC Family's hit show "Pretty Little Liars." Tomorrow night at 8/7c the show's season four finale will air.

For spoilers about the season finale from executive producer Marlene King, read on.

Marlene King recently sat down for an interview with TV Guide, and while she remained somewhat tight lipped about the season four finale, she did reveal a few exciting teasers.

"There is a shocking Ezria twist, that's all we need to say," King told TV Guide. And though she gave no further details about Ezria and what the twist can be, she said enough to peak fan's interests.

King also spoke about Allison's role in the finale, stating that it is a very emotional episode for Alison.

"On that day, which you'll see this in the finale, it's emotionally exhausting to watch and it was emotionally exhausting for all of [the actors]. It was brutal, but beautiful," the executive producer said to TV Guide.

King went on to provide some hints at what is to come for season five.

The fifth season "feels like a whole new show because there are five Pretty Little Liars now," King said.

The season four finale of "Pretty Little Liars" airs Tuesday night at 8/7c on ABC Family.