Her late Majesty Queen Elizabeth II was one of the best known, yet least known, women in the world. She was ceaselessly photographed and documented wherever she went, but at the same time she managed to keep a certain zone of privacy around herself that could only be penetrated by her family, close friends, and most trustworthy servants. I saw her from a distance a few times and read quite a bit about her, and from that my impression was that she was a down to earth common sense sort with a healthy sense of humor about herself and the role which she fulfilled steadfastly for seventy years.This is the third novel in a series by S.J. Bennett subtitled "Her Majesty The Queen Investigates." Like the first two, Murder Most Royal is an engaging mystery in which Elizabeth II, ably assisted by her assistant private secretary Rozie Oshodi, investigates a murder and tracks down the perpetrator. They are plausible and entertaining mysteries. I think Murder Most Royal is the best of the three because it depicts more of The Queen's analytical processes as she works behind the scenes with Rozie. I also enjoyed it because it's set at Sandringham at Christmas in 2016 and includes depictions of the Duke of Edinburgh, the Princess Royal, and other members of the Royal Family. I was sorry to finish the story, but relieved to see in the Afterword that Bennett intends to keep writing about The Queen's penchant for solving crimes.Elizabeth II has solved murders in another series written in the 1990s by C.C. Bennison. Death at Buckingham Palace, Death at Sandringham House, and Death at Windsor Castle, while less engaging than S.J. Bennett's series, are definitely worth searching out.