In London in 1792, fog forever shrouded the Thames, concealing the city's darkest secrets. Former military doctor Edwin Hatfield and Oxford scholar Henry West, two outsiders linked by fate, step into a dangerous game over an unknown corpse dressed in French silk.
From the password of the tailor's account book to the three-key system of the locksmith shop, from the secret gathering of the exiled nobles to the financial scandal thirty years ago, they discovered that this murder was just the tip of the iceberg. An organization codenamed "The Silent Brotherhood" has been dormant for seven years and is now awakening due to the turmoil of the French Revolution. When the "Nightingale" who kept the key breathed his last on the river bank, the pursuit of the three brass keys became the only way to uncover the truth.
This is not a simple murder, but a conspiracy that spans the English and French Channel and spans thirty years. In the banker's office, the shadow of a charity concert, and the burning ruins of Old Dockyard Street, two unconventional detectives must solve many mysteries before sunset on Thursday and prevent a blackmail plan that could shake London's financial and political circles - and the murderer may be wearing a gentleman's white gloves.
