Detective Sophie Allen investigates the brutal murder of one of her own. But with her team falling apart, do they have any hope of catching the culprit?

Twelve-year-old Amy Birkbeck is checking her bat boxes late one cold January evening in the woods by her house. She witnesses something no child should ever see — a group of men rolling a body into the deep pool of the disused old clay pit. Meanwhile, Detective Sophie Allen’s team is falling apart. One of the members of the unit goes missing. Surely he couldn’t be the body in the pool? Or is something much darker going on?

Then a second body is found in the disused clay pit. And it seems the dead man is connected to a suspected arms dealer . . .

There are dangerous goings-on in Sophie’s quiet patch of Dorset, and she doesn’t know who to trust.