Some of Marston's best insights have come from auditioning for the cast, many of whom are locals who have never acted before.'For every 10 children we auditioned, roughly one or two had some family members involved in a blood feud,' he says, pointing out of the car window to a red-tiled house on the side of the road where a family has been in isolation for three years.'It is not something that is going to go away that easily, as it has been here for hundreds of years. Whereas in the US, for example, the default reaction is to let the courts deal with murder, here there is still an expectation in certain parts of society that the males of the family should take vengeance of their own.'