Poor Lucas... or darn you, Lucas?

Last night's new episode of Pretty Little Liars shined a bright spotlight on the young man crushing on Hanna, implying that he may be working with A and then concluding with his disappearance. Where is he now? Expect that question to be a focus of next Monday's "Lethe Water Hold Me Down."

Elsewhere, Spencer will find herself in trouble as she follows an A-based lead, ending up in an unexpected location. Watch the official ABC Family preview now:

** As always, following an episode, we've updated our Pretty Little Liars music section. Browse through it now!

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