How does Twain use dramatic irony in the novel, The Man That Corrupted Hadleyburg?

Twain's use of dramatic irony underscores the hypocrisy of the town. Numerous plot devices feature dramatic irony, including the nineteen letters from Stephenson, the "favor" Burgess erroneously grants Edward by not naming him, and the applause showered upon the guilty Richardses for their honesty. Throughout the various twists and turns of the plot, the omniscient narrator keeps the reader informed of the "real" situation in Hadleyburg by means of dramatic irony.