Recapping Season 4, Episode 13 of Pretty Little Liars. Aria, Hanna, Emily and Spencer all get trapped in a creepy maybe haunted mansion in Ravenswood as they try to determine whether or not Alison is actually alive. A scary man in a World War I-era doughboy uniform and a gas mask pursues them. Is Ali really alive? Find out for sure, one way or the other, in this episode. Also, Ravenswood: zzzzzzz.