Alice Somerville's inheritance lies six feet under in a Highland peat bog - a pair of valuable vintage motorbikes buried by her grandfather at the end of World War II. But when Alice finally organises their recovery, she finds an unwelcome surprise -a body with a pair of bullet holes . . . and Nike trainers. DCI Karen Pirie of Police Scotland's Historic Cases Unit is called in to unravel a case where nothing is quite as it seems.

Meanwhile an overheard conversation in a cafe draws Karen to the heart of a murder she thought she'd already prevented.

As Karen gets closer to the several truths, it becomes clear that not everyone shares her desire for justice. Or even the idea of what justice is.