Episode 33

The Masked Assassin (仮面ノ暗殺者, Kamen no Ansatsusha) is the 33rd episode of Bungo Stray Dogs anime series. It first aired on May 31, 2019.

Synopsis
The leaders of the Port Mafia and the Detective Agency are attacked by an assassin in a mask, leaving both of them ill.

Summary
A former Guild assassin starts attacking people. He inflicts both Fukuzawa and Mori with a curse that drains their lifespan. Dazai realizes that Fyodor is controlling this person and learns that Fyodor is searching for a book that will allow him to rewrite humanity at his will. Before leaving, Fyodor has a man shoot Dazai in order to pass his information to the Agency. As a result, the Agency and Port Mafia are forced to fight one another as the winner will find a cure to heal their superiors. Kunikida replaces the unconscious President and is assisted by Edogawa to provide strategies to confront the Port Mafia who attack their building.