Digging for Victory by Cathy Faulkner

Devon, 1941. Bonnie wants to help in the war effort like her brother, Ralph, rather than tend the home vegetable patch. So when the mysterious Mr Fisher is billeted at their family home, Bonnie's mission to uncover his secrets begins. Why is he here? Is he a shirker? Or worse ... a German spy?
Binding: Paperback / softback