Book 1

The Black Orchestra

by Jj Toner

Published 15 March 2014

Book 2

The Wings of the Eagle

by Jj Toner

Published 25 August 2014

Book 3

A Postcard from Hamburg

by Jj Toner

Published 24 February 2016

Book 4

The Gingerbread Spy

by Jj Toner

Published 9 April 2018