Bestowing Sins Is God's Work is the 42nd chapter of the Bungou Stray Dogs manga.
In the underground prison of the Port Mafia, Dostoyevsky is tied down. Back on the surface, the Mafia Executives discuss Dostoyevsky's fate. One of the Executives, A asks if he can be put in charge of Dostoyevsky's interrogation. Mori allows him. A then goes underground and meets Dostoyevsky. A unties him and is disgusted on the way they treated Dostoyevsky. The two then go back up on the surface. A asks Dostoyevsky to join him, to which Dostoyevsky denies. Dostoyevsky then threatens to kill A, but A smashes a bottle of wine on his head. A then explains his ability, the ability to change the lifespan of those who equip a collar given by A himself, to the same value as jewels. He then leaves the room and says that if Dostoyevsky wears the collar he'll keep on living, if he doesn't he dies. One of A's subordinates, Topaz, takes pity on Dostoyevsky and begins to talk to him. He explains his situation and how he became a collared slave. Topaz asks Dostoyevsky if whether or not he's afraid of A. Dostoyevsky laughs at this and tells him no, as his ability is the manipulation of consciousness and space. Dostoyevsky then meets up with A again, and proposes a game. If A wins, Dostoyevsky will equip the collar, but if he loses, Dostoyevsky can escape. A agrees to this. Dostoyevsky wins. A, infuriated calls his troops to kill Dostoyevsky. To his surprise, it turns out that Dostoyevsky has already surpressed his comrades. A then laughs and says that he knew what Dostoyevsky's ability is and says that is why he won the card game. A then concludes that the only way to escape Dostoyevsky's mind is to commit suicide. Back underground, Topaz is wondering how Dostoyevsky if A has already killed off Dostoyevsky or not. Suddenly Dostoyevsky appears behind him. Topaz is shocked and asks how he escapes. Dostoyevsky answers saying it is because his ability is not the power to manipulate consciousness and space. Topaz rushes out, only to be met by A hanging from the ceiling, dead. Dostoyevsky then continues to explain everything, and reveals that his true goal was to gain a list with all the mafia member's abilities. Dostoyevsky then says that no one can know about his plan and kills Topaz. Dostoyevsky leaves while saying that 'next is the Port Mafia and the Detective Agency.'