Is it ironic that...

In a novel, two brothers announce their intention to murder a man to everyone who happens to pass their way for an entire morning. A third of the people they meet support their decision, a third try to warn the potential victim, but fail, for various reasons, and a final third attempt to stop the brothers, but for whatever reason, fail. Finally, the brothers hide next to the front door of their target, only to discover that the man, finding his front door inconvenient, in general chooses to leave through the back door of his home.