The Stolen Ones by Owen Laukkanen

In The Stolen Ones, FBI agent Carla Windermere teams with Kirk Stevens of Minnesota's Bureau of Criminal Apprehension to crack an international human-trafficking ring. Sisters Irina and Catalina Milosovici leave their home in Romania for a better life in the United States, but the man who arranges their passage has them transported in a shipping container, along with many other young women, to be sex slaves around the country. When Irina escapes and a policeman in Minnesota is shot, it sets in motion a cross-country chase, as Windermere and Stevens try to find the ringleaders and try to save the sisters' (and many other women's) lives.  However, the men in charge have a lot to lose, making them all the more dangerous. This fourth thriller in the Windermere/Stevens series is a great read-alike for Thomas Perry and C.J. Box's stand-alone novels. It will be published next month.