Helga was worried. Salazaar was smirking. Not that that was worrying, he did that all the time. Lately, however, he had been exceptionally moody, the fights with Godric were getting to him, Helga could tell. And this smirk – it wasn't like the others, the ones that played at the corner of his lips. This smirk was full blown; it was a I-know-something-that-you-will-never-know smirk.
Two days, Salazaar left the school, the smirk still on his lips.
School was closed for a month, while the remaining three founders searched the castle. Nothing.
But sometimes at night, Helga could swear she heard hissing.