Gourmet Detective: Eat, Drink and Be Buried - 2017

Henry and Maggie attend a writer, by which step son and his son reenact a historical 18th century dual's party. Some one, but has loaded the pistol having a musket ball, then when boy pulls on the cause, he destroys his step brother in front of a roomful of witnesses. Maggie and henry need to figure out the reason why and who wanted the step son deceased.