The Truth is Undercover

"'You got my coworker sent to jail.' I knew it. She's a spy." This story is about a spy named Lydia who gets deployed on a mission to the enemy country. She's on the train over when she already notices something off... a man in a suit is watching her. She decides to call the police, hoping to discard the first minor problem of her mission. But she ended up locking up a spy from the enemy side. In the long run, she ends up working with this spy, posing as a detective, not a spy. Through code names and investigations, these two end up as great partners, though they don't quite see it. They're great at getting their jobs done efficiently. But when the time comes for Lydia to go back home, there's a small problem. Her home isn't in the same country as her partners. Find out what happens between these two spies.