The murderous, backwoods Firefly family take to the road to escape the vengeful Sheriff Wydell, who is not afraid of being as ruthless as his target.

Vincent Lamarca, whose father was executed for a 1950s kidnapping of a child, grew up to become a police officer, only to see his own son become a murder suspect.

Follows rookie police officers working in Belfast, a city in which being a frontline response cop comes with unique pressures and dangers.