Minutes later, Harry helped him up from where he was shaking on the floor. "Hey, I'm sorry. It's okay; you're safe." The teenager soothed, hugging him. Severus wanted to preserve his dignity, to pull back, but being chased by a gigantic basilisk left an impression that was not easy to shake off. While Voldemort's and Dumbledores" minds were walls for him, Harry's defences were purgatory. Cautiously, he closed his arms around the arms that stabilised him, needing the contact to ground himself. He should be stronger than this. More composed. He was the teacher, after all. But Harry would not let go. Was he still trembling?