Olivier Norek: Former police officer, writer on SPIRAL and a million-copy bestseller

The summary execution of three dealers - one murdered in full view of a police surveillance team - is the signal for hell to be unleashed in France's most notorious suburb.

Now there's a new kingpin in charge, using his ruthless teenage enforcer to assert an iron grip on his territory. And the local mayor, no stranger to the criminal underworld, is willing to make a pact with the devil if it will secure her a third term.

Enter Capitaine Coste and his team, ready to break the rules to prevent the drugs squad from throwing an elderly stash-minder to the lions as bait. But when the blue touchpaper is lit on the estates, it will be all they can do to save their own skins from the inferno.

Once again, Norek draws on all his experience as a police officer in France's capital of crime - the same experience he drew on as a writer for the hit TV series Spiral - making Turf Wars the most authentic crime novel you'll read all year.