'Pretty Little Liars' Promote 'Shocking' Season Four Finale at 'Good Morning America'

Lucy Hale and Troian Bellisario arrive at the Good Morning America studios on Tuesday (March 18) in New York City.

The girls were joined by their co-stars Shay Mitchell, Ashley Benson, and Sasha Pieterse to promote the season four finale, which airs TONIGHT @ 8PM on ABC Family.

PHOTOS: Check out the latest pics of Lucy Hale

“There is a shocking Ezria twist, that’s all we need to say,” executive producer Marlene King revealed at the recent 2014 PaleyFest panel.

She added about Allison (Pieterse), “[Season 5] feels like a whole new show because there are five Pretty Little Liars now. It’s going to affect them all individually. It’s going to affect them as a group. It’s going to affect their relationships with their young male and female partners. Season 5 is shaping up to be emotionally the most complex season we’ve had so far.”