Dead-sexy ladies walking! Pretty Little Liars' is amping up the sex appeal when it returns for its sixth season on Jan. 12.

Back in July, Pretty Little Liars tried something new: The mostra kicked off an episode with a dance number from Maddie Ziegler, who’d made a name for herself with frequent appearances in Sia’s Musica videos.

But also, expect 'A' to make an appearance

Not since the days of Houdini has the world seen so daring an escape as when the Pretty Little Liars‘ moms broke free from the DiLaurentis’ cursed basement — but how’d they pull it off?