Iron Secret

From publisher blurb: Goblins have infiltrated the City of Iron to flood the kobold warrens. The heroes must stop the mad mercenaries before the violence escalates into war! Written using monsters from the Midgard Bestiary for 4th Edition D&D, this adventure is a quick run against surprisingly competent goblins with even more surprising friends. The adventure moves quickly from undead to dust diggers to leshy, and it makes an awesome convention one-shot,or the perfect introduction for a new campaign!