Unforgettable - Lindsay Mckenna

They were strangers. They had a mission to perform. And it all seemed small in comparison to Ukrainian combat medic Nik Morozov, who went undercover and turned to illegal drug smuggling to save his brother's life. The US government insisted he had an undercover woman partner to help capture a drug team leader. The last thing he needed was to fall hard and fast for the woman who would pretend to be his romantic interest.

Daria Kozlof was abandoned by her mother in St. Petersburg, Russia. A kind Ukrainian couple adopted her and took her to Kiev, where she found family. She had talents and real skills that the US military wanted badly, and she became a citizen of that country and became a world-class Marine Corps sniper fighting in the Middle East.

Thrown together in the Peruvian jungle, each with their brutal baggage from their pasts hanging over them, Nik and Daria had nowhere to turn but to one another. Neither of them expected the fierce passion that exploded between them. It was the wrong time and the wrong place. Russian drug smugglers took no prisoners when someone crossed them. Danger spiraled into pushing Nik and Daria closer to one another. And closer to death.