A mystery begins during the Great War of 1918, when young Gabriel Hughenfort, dies amidst scandalous rumours that have haunted the family for years. Mary Russell and Sherlock Holmes are called upon to uncover the truth. A missing diary, a purloined bundle of letters and a trail of ominous clues comprise a mystery that will call for Holmes's cleverest disguises and Russell's most daring journeys into the unknown!

The latest in Laurie R King's hugely popular Mary Russell mystery series