Asil and Luke's quiet and ordered country existence is interrupted one evening by a mysterious stranger whose car has broken down. Desperately needing to make the last ferry of the night, he implores Luke to help. But Luke's Good Samaritan act lands him with a lot more than he bargained for.

Events quickly spiral out of control and both he and Asil become embroiled in a dangerous web involving drug dealing, ex-IRA paramilitaries, hitmen and murder. Detectives Currie and Lambert join forces with their counterparts in the Ludenscheid Polizei in Germany in an...