Make sure you don’t miss out on any vital clues by watching episode 18 of Pretty Little Liars, airing tonight on ABC Family!

Episode synopsis:

“A Kiss Before Lying”: After putting her foot down about Caleb with her friends, Hanna begins to feel that she is getting the cold shoulder from them. Aria, Emily and Spencer seem to be up to something, but she can’t quite seem to figure out what it is. But what Hanna may take as the cold shoulder, could really be just a case of guilty consciences from her friends. Even more upsetting is the return of her evil step-sister Kate, whose first day at Rosewood High is happening during this episode.

Preview: