After a mass shooting at a mosque, the police apprehend Amadou - a young Muslim man - but release Etienne Roy. Detectives Esa and Rachel sense there is more to the story. Sent to liaise with a community in the grip of fear, they find themselves in fraught new territory, fueled by the suspicion exploited by a right-wing radio host. As they grapple to stop tensions shutting the case down entirely, all the time, someone is pointing Esa in another direction Tackles an important human rights issue.