The Iron Jackal is the third book in the Tales of the Ketty Jay series by Chris Wooding.
Everything is finally looking up for Darian Frey and the crew of the Ketty Jay. They’re heroes now, heroes who fought alongside the Century Knights to save common people from Manes. People are no longer after their heads. They’re no longer broke, the Ketty Jay’s all fixed up, and the crew actually functions like a team. So when Trinicia Dracken offers them a job stealing a priceless ancient artifact from a train in Samarla, Frey is confident it’ll be an easy job. It’s what comes after the job that he needs to worry about.