If you watch the scene in 3x15 with Hannah in Lucas’s room, at the end when hannah is sitting down, you can see a pair of old dirty converses at the end of his bed. First of all, who keeps their shoes in their bedroom? So I think that was a hint, at the end ‘A’ scene, they very quickly show a shot of the shoes of the person who is burying the masks, and they are the same ones. Lucas is lying to throw the girls off.