During a violent snowstorm, the Royal Family gather at the Castle for a traditional Christmas together. Amid rumours that he plans to name a new successor, King Eric stands to make his traditional after-dinner speech. He sips from a glass of his favourite whisky- and drops dead.

The king has been poisoned, and only one of the royals could have done the deed. Trapped by the raging blizzard, it is up to Eric's beloved head chef, Jonathan Alleyne, to play detective and get to the bottom of this heinous crime.

Jon is determined to expose the truth, even if it puts him in grave danger, and threatens to shake the entire monarchy to its core...