Harry was walking in the great hall when he saw some writing in tiny letters on the edge of the wall. Harry noticed that the writting was written in blood. all of a sudden remembered that sentence:" CHAMBER OF SECRETS HAS BEEN OPENED. ENEMIES OF THE HEIR, BEWARE"

the chamber of secrets rang a lot of bells . then he remembered. it was the 2nd year at Hogwarts and he killed the Basilisk. and he remembered defeating tom Marvolo riddle at the chamber of secrets. harry read it again and then realized that the chamber has been opened AGAIN! Then harry remembered that he had to go to classes so he turned around and there was the basilisk! he tried to move but he couldn't, he was petrified!