Lady Elena Fleming has spent years perfecting the art of politeness-smiling sweetly while quietly eviscerating the men who presume they can steer her life. So when Colin Westcliff, Lord Highwood, returns to London with a gaze too knowing and a reputation too spotless, Elena is certain of one thing:

He is dangerous.

Colin appears to be everything the beau monde admires-rich, titled, impeccably mannered. Yet beneath the polished charm lies a government spy with a single mission...and Lady Elena has somehow become entangled in it. She's inquisitive. Stubborn. Unsettlingly perceptive. And far too skilled at slipping past his defenses.

Forced into an uneasy alliance as whispers of treason coil through glittering ballrooms and shadowed garden walks, Elena and Colin trade barbs as sharp as their stolen glances-each determined to outmaneuver the other. But every secret Colin keeps draws Elena closer, and every truth Elena demands threatens to bring his carefully controlled world crashing down.

Because the one thing more perilous than a spy's enemies...

...is falling for the woman who might ruin him.