Who would have thought it: Queen Elizabeth has a secret passion – she loves to solve criminal cases! Incognito, of course; the fame is for others to reap. When a Russian pianist dies under particularly embarrassing circumstances during a celebration at Windsor Castle, MI5 immediately suspects a plot by Vladimir Putin. The Queen is not amused by such politically charged zeal. Action must be taken, but discreetly, of course. Queen Elizabeth confides in her new Nigerian private secretary Rozie, who soon must exceed her duties with both subtlety and courage. Will the two women be able to uncover the true murderer before MI5 triggers greater diplomatic complications?.