How far would you be willing to go for justice?

'Full of well-handled forensics and the brooding atmosphere of the Essex coast' Mail on Sunday

When a lone shooter claims the lives of five people on Christmas Day before turning the gun on himself, it's up to DI Grace Fisher to find out, not who did it, but why and how.

Tracing the illegal weapon and its deadly load of homemade bullets, she soon uncovers a toxic web of police corruption, personal vendettas and revenge. But when the enemy is within, who will believe her?

As threats to her safety mount up and the strain of secrecy begins to wreck her friendships, Grace must decide how far she wants to pursue justice - and at what cost.