Of all the twisted things Charles has done over the past six seasons of Pretty Little Liars, asking his sister to prom might just be the most unsettling.

The Liars' mothers take over the sleuthing action while their daughters hit up prom.

Caleb and Hanna have already had a rough go of things in Season 6, and judging 由 this clip from Tuesday’s Pretty Little Liars, prom night isn’t going to make their relationship any stronger.

Another week in Rosewood, another former friend revealed to be a lying, scheming “A”ssistant.

Multiple new suspects emerge, and the Liars get an art gallery surprise.

There are only three episodes of Pretty Little Liars left until the 显示 takes its midseason break, and as ABC Family has been advertising for the last several weeks, the identity of Charles will finally be revealed.