Justice Hall

Fresh from their adventures in Dartmoor, Mary Russell and Sherlock Holmes are drawn into a decades-old mystery involving the noble Hughenfort family. When the Duke of Beauville's younger brother returns to England, he demands an investigation into the suspicious death of the family heir during the Great War. The search for the truth takes the duo from the English countryside to Paris as they hunt for a missing diary and a killer who is still very much active.