The Queen’s spymasters in the newly created Special (Secret) Branch of Scotland Yard inform the Prime Minister that Her Majesty is at grave risk of assassination during the Jubilee procession to Westminster Abbey. Blood-oath Irish Republican fanatics have vowed to kill the Queen and her family using Dynamite bombs of terrible potency. In this second book in the Sherlock Holmes and Young Winston series, Holmes and his companions Doctor Watson and Winston Churchill are called in not only to prevent a Dynamite outrage against the Queen, but to avert a catastrophic war that might bring down the Empire. But is all as it seems, or is one of Holmes’ clients using him in a plot to disgrace the other