In the blink of an eye, it was the nineteenth. Shuxin brought Professor Snape to the library for today's lecture: "An Introduction to Chemical Interests."
A large crowd had turned out, mostly adults accompanied by children. Professor Snape was deeply displeased, but Shuxin dragged him inside anyway.
At school, Professor Snape had helped Shuxin immensely, and Shuxin had always wanted to repay him. But what could Professor Snape possibly need?
Chapter 22