Implausible Deniability

Any player that has spent any time dungeon crawling is familiar with the scenario in today’s comic. They walk into a room, violently and loudly slaughter every living thing in said room, remove all valuables from the cooling corpses, and then move onto the next room whose inhabitants seem blissfully unaware that their coworkers were just bloodedly murdered not twenty feet away. The alternative – having the monsters in the next room charge in to help their allies – seems unfair to the players: triggering two encounters at once.