The narrative surrounding Ivan Milat’s correspondence with Toni Rigby presents a complex interplay of human curiosity, institutional dynamics, and the enduring mystery of a serial killer’s psyche. At its strongest, the story highlights the paradox of Milat’s letters—his insistence on innocence juxtaposed with his detailed knowledge of the crimes, which Rigby found unsettling. The inclusion of Katherine Knight’s interactions adds another layer, illustrating how prisoners form relationships in ext...