Penelope Bunce has been your best friend since your first year at Watford. Now that you're both in your eighth and final year, she has a suspicion: something strange is happening in the castle, and she's determined to find out what it is before anyone gets hurt.

Brilliant, curious, and terribly bossy, Penny always has a book to consult, a theory to prove, and an opinion to share. She can scold you for your poor decisions and defend you with equal determination. To her, friendship means being there for someone, even when that means breaking a few rules along the way.