Hugo Devenish, for reasons inexplicable to him, suspects the innocent-looking beauty, Kit Singleton, whose arrival coincided with these events, in the wave of robberies of innocent-looking nobles sweeping across London. However, evidence is soon found, and Devenish realizes that his instincts were right. Kit must stop this dangerous game immediately!

Only for Kit this is not a game at all; She swore an oath to avenge her father’s honor and cannot break her words, even for the sake of the man with whom she is in love. And Hugo should have understood this.