Vanessa and Casper explore the theme of mercy in chapter nineteen of Harry Potter and the Prisoner of Azkaban. This week, they discuss Snape's dual identity, Pettigrew's shrewd manipulations, and the legacy of Lily and James Potter. Throughout the episode they consider the question: What's the differing between mercy and forgiveness? 

This week's voicemail was thanks to Blair Boudreaux. Next week we're reading chapter twenty, The Dementors' Kiss, through the theme of justice.