Vanessa and Casper explore the theme of friendship in chapter nine of Harry Potter and the Half-Blood Prince. This week we are joined by internet super-star Gaby Dunn, who shares an opening story about a friendship break-up. Casper and Vanessa discuss McGonagall’s relationship with Neville, whether Ginny considers Harry ‘family’, and why Harry isn’t friends with Ernie Macmillan. Throughout the episode we consider the question: Is it possible to become friends with your mentors?

Thanks to Nicole Engelhardt for this week's voicemail! Next week we’re doing an Owl Post episode where we discuss Slytherin identity with Travis McElroy.

Don’t forget to check out Gabby’s new book, Please Send Help.