- In Chapter 9 of Half-Blood Prince, the first day of term proves to be more interesting than usual. In the back of a cabinet, Harry finds a heavily-annotated potions textbook that helps him impress Slughorn.- Today’s prompt is: How did Snape's Potions book end up in the classroom cupboard, and, considering its annotations, why did no one else ever keep it?- This episode is hosted by Rex Hadden.- Join in the conversation on MuggleNet’s social media channels by using #PromptlyPotter