Duchess risks his own safety to take the money, and he dies because of it. He drowns before he can find his father—and with debts still owed to all the people he sees on that crowded street. “The rest is silence” comes from the play
Hamlet, and it is the last line Hamlet speaks before he dies. Duchess is haunted by his father, the Shakespearean actor, whom Duchess never confronted for his mistreatment.