Will DI Clare Mackay end up with blood on her hands?

A young man is found dead near a nightclub. He has marks on his neck, the signature of the Choker, a killer who has been targeting gay men across the country. Now, it seems he's in DI Clare Mackay's territory.

She discovers this victim has links to notorious criminals in the area. Is it possible his death was at the hands of someone else?

More men, including ones linked to the victim, are attacked and left injured. It's only a matter of time before someone else is killed. But Clare's desire for justice leaves her with blindspots which put her job – and her life – at risk.