I picked this up from Little Free Library #9097 on my first trip through the back half of my my new Bellevue route. I released Jack & Jill.

This was made into a movie that I really didn't care for. By coincidence, I picked up a Black Widow book right before this.

From the back cover:
In the post-Soviet intelligence jungle, a beautiful Russian spy trained in the art of seduction collides in a passionate duel of wills with the young CIA officer who handles the Agency's most important mole.

Dominika Egorova did not ask to train in Russia's secret "Sparrow School," but the old game of sexpionage now has no more skilled practitioner. In American Nathaniel Nash, however, Dominika may have met her match, as the two commence a deadly game played in a world of double existence, where secret allegiances are made and broken, and where forbidden passion threatens not just a man and a woman but the fate of two powerful countries.

I released this at Little Free Library #76178 and picked up The Secret of the Old Clock which was a rare Bookcrossing find from another user!