In the aftermath of a mass shooting at a mosque in Quebec, the local police apprehend Amadou Duchon - a young Muslim man at the scene helping the wounded - but release Etienne Roy, the local priest who was found with a weapon in his hands.

The shooting looks like a hate crime, but detectives Esa Khattak and Rachel Getty 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 panic and suspicion exploited by a right-wing radio host.

As Rachel and Esa grapple to stop tensions shutting the case down entirely, all the time, someone is pointing Esa in another direction, a shadowy presence who anticipates his every move.

A Deadly Divide is a piercingly observed, gripping thriller that reveals the fractures that try to tear us all apart: from the once-tight partnership between detectives Esa and Rachel, to the truth about a deeply divided nation.