Six of Crows by Leigh Bardugo (2015) Henry Holt

A farm boy loses his big brother and their life savings to a conman.  He decides to do anything to get even and see the conman ruined.  To do so he becomes known as dirty hands since he will do anything for a price.  He gathers a team around him that becomes more successful than the other gangs on the docks.  Then he takes a job that promises enough money to buy freedom for his crew of six.  They break into an impenetrable fortress and steal a person.  Every character has background and things to hide.  But will the merchant they are working for keep his deal or make things much worse.