712538 Last Violent Call Paperback by Chloe Gong

In A Foul Thing, Roma and Juliette have established themselves as the heads of an underground weapons ring in Zhouzhuang, making a living the way they do best while remaining anonymous in their quiet life. But when they hear about Russians girls showing up date in neraby towns, they decide to investigate - and discover that thids mystery is closer to home than they ever imagined...In This Foul Murder, Benedict and Marshall have been summoned by Roma to find the illusive scientist, Laurens, and bring him to Zhouzhuang. Time is of the essence aboard the week-long Trans Siberian Express, but when someone is mudered on board, Benedict and Marshall convince the officer in charge they are investigators and promise they can solve the murder if he doesn't stop the train. But as they dig deeper, they realize that the murder might have surprising ties to their own mission.