Her Majesty the Queen Investigates

It is the early spring of 2016 and Queen Elizabeth is at Windsor Castle in advance of her 90th birthday celebrations. But the preparations are interrupted when a guest is found dead in one of the Castle bedrooms. The scene suggests the young Russian pianist strangled himself, but a badly tied knot leads MI5 to suspect foul play was involved. The Queen leaves the investigation to the professionals—until their suspicions point them in the wrong direction. Unhappy at the mishandling of the case and concerned for her staff's morale, the monarch decides to take matters into her own hands.

The morning after a dinner party at Windsor Castle, 89-year-old Queen Elizabeth is shocked to discover that one of her guests has been found murdered in his room, with a rope around his neck. When the police begin to suspect her loyal servants, Her Majesty knows they are looking in the wrong place. For the queen has been living an extraordinary double life ever since her coronation. Away from the public eye, she has a brilliant knack for solving crimes.

At Buckingham Palace, the autumn of 2016 presages uncertain times. The Queen must deal with the fallout from the Brexit referendum, a new female prime minister, and a tumultuous election in the United States—yet these prove to be the least of her worries when a staff member is found dead beside the palace swimming pool.

Queen Elizabeth II is having a royal nightmare. A referendum divides the nation, a tumultuous election grips the United States - and the body of a staff member is found dead beside Buckingham Palace swimming pool. Is it a tragic accident, as the police think? Or is something more sinister going on? As Her Majesty looks for answers, her trusted assistant, Rozie, is on the trail of a treasured painting that once hung outside the queen's bedroom.

Queen Elizabeth II is looking forward to a traditional Christmas gathering with her family in Sandringham when a shocking discovery interrupts holiday plans. A severed hand has been found—but even more unsettling, she recognizes the signet ring still attached to a finger. It belongs to a scion of the St Cyr family, her old friends from nearby Ladybridge Hall. Despite the personal connection, the Queen wants to leave the investigation to the police—that is, until newspapers drag her name into the matter.

The Queen identifies the 70 year-old victim, Edward St Cyr, from his signet ring. But the search for his killer is not so straightforward. Suspects include the Queen's horse groom, a shady land agent, an aristocrat neighbour, as well as the victim's many cousins and relations. The investigation leads the Queen - and her trusted assistant, Rozie - to a local pigeon racing club, back to London, and to the ancient, moated Godwick Hall. But how do the seemingly disparate pieces of the puzzle fit together? And who is the next victim?

1957 - A young woman is found dead in a mews house a mile from Buckingham Palace, wearing only silk underwear and a a diamond tiara. An older man is discovered nearby, garrotted and pierced through the eye with a long, sharp implement. According to the police, a high society card game was going on downstairs that night. One of the players surely committed the murders, but each of them can give the others an alibi.

It's 1961 and the Queen is planning her state visit to Italy aboard Britannia. But before she goes, an unreliable witness claims to have seen a brutal murder from the royal train. Did it really happen, and could the victim be a missing friend of Princess Margaret's new husband, Tony Armstrong Jones?