London, 1757. On a clear June morning, Lord John Grey steps out of the Beefsteak Club with his mind reeling. As a nobleman and high-ranking officer in His Majesty's army, he's just witnessed something so shocking it could destroy his family.

Before he can prevent the impending scandal, duty calls: the Crown has tasked him with investigating the brutal murder of a fellow officer—a man who may have been a traitor.

Torn between protecting his family's honor and unmasking a conspiracy that reaches the highest levels of society, Lord John is ensnared in a web of treachery and betrayal.

As secrets unravel and enemies close in, will he safeguard all he holds dear—or lose everything?