Nachtboot Naar Tanger by Kevin Barry

Two ageing Irish gangsters wait in a seedy port town in southern Spain for a night ferry, trading sharp, wounded monologues about past crimes, betrayals and squandered opportunities as they search—obsessively and bitterly—for a missing young woman whose disappearance and decline into addiction haunts them; the novel moves between memory, regret and dark humour as the men confront the decay of their lives and the violent ghosts of their past.