Pretty Little Liars introduced fans to Vivian Darkbloom last night, showcasing a new side to Alison and raising the stakes in the drama's ongoing mystery.

What can viewers expect next Monday evening? Look for "The Naked Truth" to feature something called "Truth-Up Day," in which students at Rosewood are given a platform on which they can air grievances and ask for honest answers.

Along these lines, Spencer will investigate the happenings between Jason and her father, while Aria continues to grill Holden and Hanna tries to figure out Kate.

Get your first few looks at the episode now, via the ABC Family promo, the Canadian promo and one sneak peek:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.