The Penguin has spent its first three episodes teasing Sofia’s escapades as the infamous Hangman serial killer, an adaptation of the comics canon “codename” she earned in Jeph Loeb and Tim Sale’s Batman: Dark Victory by committing a string of calling-card murders.

The Penguin Episode 4 “Cent’Anni” finally revealed the dark backstory of Sofia Falcone (Cristin Milioti) and the events that led to her being committed to Arkham Asylum for ten years. While getting that pivotal piece of backstory,

The Penguin Episode 4 “Cent’anni” finally reveals once and for all exactly what Sofia Falcone (Cristin Milioti) did to wind up locked away in Arkham Asylum for ten whole years. The HBO show reveals that Sofia might not have been totally lying when she insisted she’s not the Hangman,