London: Denis Dobson, 1965

8vo, pp. 192. Original black boards, lettered in silver to spine. Illustrated dustwrapper. Very slightly cocked, otherwise a near fine copy in a very good dustwrapper with some wear to corners and spine ends, and with a little creasing to lower edge of front panel.

First UK edition, INSCRIBED BY THE AUTHOR: 'For Audrey & Oliver. The best of happy times in your new house. Affectionately, Eva-Lis. St. Saviour, Whitsuntide 1965. P.S. The next book's better.'

Eva-Lis Wuorio [1918-1988] was born in Finland, spent her childhood in Canada, and eventually settled in the Channel Islands. She wrote mostly for children and young adults, but this title is a spy story.