I picked this book up in a paperback edition but it is also available in ebook. The name of the book is A Letter of Mary by Laurie R. King. This is the third book in a series that spans thirteen books with the fourteenth coming out next spring. The story centers around Sherlock Holmes and the main character his wife, Mary Russell Holmes.
Holmes has retired to the countryside to raise bees and do chemical experiments while his wife studies theology through ancient texts. The stories are set in the 1920s.
This story starts with an unexpected visit from an old friend from Egypt named Miss Dorothy Ruskin who is an amateur archaeologist. She has come to see the couple about an ornate box that was given to her by a native worker as a thank you. Inside the box is a tattered scroll that appears to be a letter from Mary Magdalene. Miss Ruskin asks the couple to safeguard the box and letter for her.
Soon after leaving the Holmes residence Miss Ruskin is hit by a car when crossing the street and is killed. Mary, with help from Sherlock soon discovers it is murder. The race is on to find out who killed her and why.
I enjoyed this book. I have always been a fan of Sherlock Holmes and Ms. King does an excellent job of weaving elements of the original canon into her story. The inner play between the two main characters is very entertaining. The plot is well done and fools up to the end. Will definitely read more books in this series.